A general view shows the city where the parade in honor of "Senor del Gran Poder" (Lord of Great Power) takes place, in La Paz, Bolivia, June 6, 2019. Picture taken June 6, 2019. REUTERS/David Mercado

Farmers wearing flat caps attend sheep sales at the livestock market in Melton Mowbray, Britain September 18, 2018. REUTERS/Darren Staples

A Farmers wearing a flat cap attends sheep sales at the livestock market in Melton Mowbray, Britain September 18, 2018. REUTERS/Darren Staples

A flat cap adorns a mannequin on a stall at the livestock market in Melton Mowbray, Britain September 18, 2018. REUTERS/Darren Staples

A farmer wears a flat cap during a sheep sale at the livestock market in Melton Mowbray, Britain September 18, 2018. REUTERS/Darren Staples

A man wearing a flat cap (L) talks to a man in a trilby during sheep sales at the livestock market in Melton Mowbray, Britain September 18, 2018. REUTERS/Darren Staples

Farmers wearing flat cap and trilby hats attend a cattle sale at the livestock market in Melton Mowbray, Britain September 18, 2018. REUTERS/Darren Staples

A flat cap adorns a mannequin on a stall at the livestock market in Melton Mowbray, Britain September 18, 2018. REUTERS/Darren Staples

Horse Racing - Grand National Festival - Aintree Racecourse, Liverpool, Britain - April 13, 2018 General view of flat caps for sale during Ladies Day at the Grand National Festival REUTERS/Andrew Yates

Women wearing Make America Great Again hats sit at a table at Trump Bar at the offices of Republican president-elect Donald Trump at Trump Tower in New York, New York, U.S. November 14, 2016. REUTERS/Carlo Allegri

Flat cap mushrooms are prepared for packaging at Codd Mushroom farm in Tullow, Ireland October 9, 2016. Picture taken October 9, 2016. REUTERS/Clodagh Kilcoyne

Flat cap mushrooms are prepared for packaging at Codd Mushroom farm in Tullow, Ireland October 9, 2016. Picture taken October 9, 2016. REUTERS/Clodagh Kilcoyne

Republican presidential nominee Donald Trump "Make America Great Again" hats are pictured during a meeting with Trump's Hispanic Advisory Council at Trump Tower in the Manhattan borough of New York, U.S., August 20, 2016. REUTERS/Carlo Allegri

A picture shows different types of flat-topped French military caps in a cloakroom at the Defence ministry in Paris, France, during the annual reception in honour of the French Armed Forces July 13, 2016. REUTERS/Stephane De Sakutin/Pool

A picture shows a bicorn hat, an umbrella, bags and different types of flat-topped French military caps in a cloakroom at the Defence ministry in Paris, France, during the annual reception in honour of the French Armed Forces July 13, 2016. REUTERS/Stephane De Sakutin/Pool

Pensioners walk along La Bola street during the International Day of Older Persons in downtown Ronda, near Malaga October 1, 2013. Spain will use 11.6 billion euros ($15.70 billion) of the pension reserve fund in 2013 to pay pensions, Spain's Labour Minister Fatima Banez said on Tuesday. REUTERS/Jon Nazca (SPAIN - Tags: SOCIETY BUSINESS POLITICS)

Artist Andy Golub places body paint on model Ethan Itzkow in Times Square, New York July 10, 2013. Golub, arrested on charges of public lewdness two years ago, made his return to Times Square after agreeing to only pursue his craft at night, local media reported. Golub is allowed to paint fully nude models in the day if he provides reasonable notice of the date, time and location of his project, media sourcing the New York City Law Department said. REUTERS/Adrees Latif (UNITED STATES - Tags: SOCIETY)

Technicians make adjustments to robot rock band Z-Machines' drummer Ashura after the band's debut live concert in Tokyo June 24, 2013. Three robot rockers took to the stage in Tokyo on Monday to perform three songs, including one in collaboration with Japanese pop girl duo Amoyamo, to a crowd of nearly 100 people. REUTERS/Toru Hanai (JAPAN - Tags: ENTERTAINMENT SCIENCE TECHNOLOGY SOCIETY)

Nakoula Basseley Nakoula (C) is escorted out of his home by Los Angeles County Sheriff's officers in Cerritos, California September 15, 2012. Nakoula, a California man convicted of bank fraud has been escorted to an interview with federal officers probing possible probation violations stemming from the making of an anti-Islam video that has triggered violent protests in the Muslim world, police said on Saturday. A Los Angeles County Sheriff's spokesman said Nakoula voluntarily left his home, accompanied by sheriff's deputies, to meet with the officers in the Cerritos Sheriff's Station. The obscure 13-minute English-language video, which was filmed in California and circulated on the Internet under several titles including "Innocence of Muslims," portrays Prophet Mohammad engaged in crude and offensive behavior. REUTERS/Bret Hartman (UNITED STATES - Tags: RELIGION CRIME LAW POLITICS TPX IMAGES OF THE DAY)

A flat cap sits on the steering wheel of a vintage car during the Chatsworth House Country Fair near Bakewell, central England, August 31, 2012. REUTERS/Darren Staples (BRITAIN - Tags: TRANSPORT SOCIETY)

A Pearly King wears a flat cap as he attends the annual crowning of a new generation of Pearly Kings and Queens at the Carpenters Arms pub in east London May 6, 2012. The pub in Bethnal Green hosted the largest crowning of Pearly Kings and Queens in 100 years, local media reported. REUTERS/Olivia Harris (BRITAIN - Tags: SOCIETY SPORT OLYMPICS)

A reveller with condoms attached to his hat, takes part in the Christopher Street Day (CSD) parade in Cologne July 3, 2011. Several thousand revellers took part in the annual CSD parade in the western German city of Cologne to demonstrate for the rights of all lesbian, gay, bisexual, transgender and transsexual people and to commemorate clashes between gay people and U.S. police in New York City's Christopher Street in June 1969. REUTERS/Wolfgang Rattay (GERMANY - Tags: ENTERTAINMENT SOCIETY)

A man walks with a flag at the World Trade Center site in New York May 2, 2011. Al Qaeda leader Osama bin Laden was killed in a firefight with U.S. forces in Pakistan on Sunday, ending a nearly 10-year worldwide hunt for the mastermind of the Sept. 11 attacks. REUTERS/Andrew Kelly (UNITED STATES - Tags: SOCIETY POLITICS)

A former Australian serviceman wipes away tears during a dawn service to commemorate ANZAC Day at the Martin Place cenotaph in Sydney April 25, 2011. ANZAC stands for Australian and New Zealand Army Corp and ANZAC day is marked annually with hundreds of dawn services across the two countries. REUTERS/Tim Wimborne (AUSTRALIA - Tags: ANNIVERSARY CONFLICT)

A man walks along a street in Ronda, near the southern Spanish city of Malaga, January 13, 2011. Spain's economy is capable of growing by 2-2.5 percent annually from 2011 to 2015, but the country must forge ahead on reforms with or without a political consensus, Prime Minister Jose Luis Rodriguez Zapatero said on Tuesday. Among austerity plans announced are a reform of the country's pension system which would raise the retirement age from 65 to 67. REUTERS/Jon Nazca (SPAIN - Tags: EMPLOYMENT BUSINESS POLITICS SOCIETY IMAGES OF THE DAY)

A man smokes while standing on a roof of a two-floor wooden house in the village of Molodyozhny, some 25 km (16 miles) south of Russia's Siberian city of Krasnoyarsk, December 14, 2010. The air temperature dropped to about -24 degrees Celsius (-11.2 degrees Fahrenheit), according to local weather reports. REUTERS/Ilya Naymushin (RUSSIA - Tags: ENVIRONMENT)

A pedestrian walks past a discount store in central Dublin November 14, 2010. The European Union is not putting pressure on Ireland to apply for emergency assistance and there are no discussions about a bailout, the Irish minister for enterprise, trade and innovation said on Sunday. REUTERS/Cathal McNaughton (IRELAND - Tags: BUSINESS POLITICS)

A man walks in front of a residential site in Shanghai August 23, 2010. With one arm, China is pouring cold water on property speculators. With the other, it is tossing a life buoy to the real estate sector via increased spending on affordable housing. REUTERS/Aly Song (CHINA - Tags: BUSINESS)

A migrant worker carries cartons of drinking water at a store in Nanjing, Jiangsu province June 18, 2010. Temperatures in six of 10 major cities across China were above their long-term averages in May, data from the China Meteorological Administration showed. REUTERS/Sean Yong (CHINA - Tags: SOCIETY ENVIRONMENT)

A man walks past a woman wearing a wedding dress as part of a flash mob on the streets of Porto, northern Portugal January 30, 2010. REUTERS/ Nacho Doce (PORTUGAL - Tags: SOCIETY IMAGES OF THE DAY)

A woman is reflected in a window at Samsung Electronics' headquarters in Seoul January 29, 2010. Samsung Electronics expects rapidly recovering demand for its premium computer memory chips and flat screen TVs to drive growth this year, with the unwinding of global stimulus measures the key risk for sales. Seoul shares extended losses to post their lowest close in eight weeks on Friday, led by large cap issues with Samsung Electronics retreating despite its solid quarterly results. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: BUSINESS)

Mobile phones made by Samsung Electronics are displayed at the company's main office in Seoul January 29, 2010. Samsung Electronics expects rapidly recovering demand for its premium computer memory chips and flat screen TVs to drive growth this year, with the unwinding of global stimulus measures the key risk for sales. Seoul shares extended losses to post their lowest close in eight weeks on Friday, led by large cap issues with Samsung Electronics retreating despite its solid quarterly results. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: BUSINESS SCI TECH)

Laptop computers made by Samsung Electronics are displayed at the company's main office in Seoul January 29, 2010. Samsung Electronics expects rapidly recovering demand for its premium computer memory chips and flat screen TVs to drive growth this year, with the unwinding of global stimulus measures the key risk for sales. Seoul shares extended losses to post their lowest close in eight weeks on Friday, led by large cap issues with Samsung Electronics retreating despite its solid quarterly results. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: BUSINESS SCI TECH IMAGES OF THE DAY)

Mobile phones made by Samsung Electronics are displayed at the company's main office in Seoul January 29, 2010. Samsung Electronics expects rapidly recovering demand for its premium computer memory chips and flat screen TVs to drive growth this year, with the unwinding of global stimulus measures the key risk for sales. Seoul shares extended losses to post their lowest close in eight weeks on Friday, led by large cap issues with Samsung Electronics retreating despite its solid quarterly results. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: BUSINESS SCI TECH)

Mobile phones made by Samsung Electronics are displayed at the company's main office in Seoul January 29, 2010. Samsung Electronics expects rapidly recovering demand for its premium computer memory chips and flat screen TVs to drive growth this year, with the unwinding of global stimulus measures the key risk for sales. Seoul shares extended losses to post their lowest close in eight weeks on Friday, led by large cap issues with Samsung Electronics retreating despite its solid quarterly results. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: BUSINESS SCI TECH)

Memory chips made by Samsung Electronics are displayed at the company's main office in Seoul January 29, 2010. Samsung Electronics expects rapidly recovering demand for its premium computer memory chips and flat screen TVs to drive growth this year, with the unwinding of global stimulus measures the key risk for sales. Seoul shares extended losses to post their lowest close in eight weeks on Friday, led by large cap issues with Samsung Electronics retreating despite its solid quarterly results. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: BUSINESS)

An opponent of Venezuelan President Hugo Chavez attends a demonstration in support of the RCTV broadcasting station in Caracas January 26, 2010. Venezuelan cable providers, responding to government orders, stopped showing a station on Sunday critical of President Hugo Chavez that the left-wing leader pushed off free-access television in 2007. REUTERS/Carlos Garcia Rawlins (VENEZUELA - Tags: POLITICS MEDIA CIVIL UNREST)

A Ghana soccer supporter waits for their team to arrive at a training session in Luanda, January 21, 2010. Ghana will meet host nation Angola in an African Nations Cup quarter-final soccer match in Luanda on Sunday. REUTERS/Mike Hutchings (ANGOLA - Tags: SPORT SOCCER)

A falconer releases a Bengal Eagle Owl during a falconry demonstration in Tokyo January 2, 2010. The display of Japan's traditional falconry was held on Saturday as a part of New Years celebrations. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: ANIMALS ANNIVERSARY IMAGES OF THE DAY)

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

A man holds a placard during a protest gathering in front of the British embassy in Tehran December 2, 2009. The gathering was held to ask British government to return Arash Hejazi, who fled to London after being identified as a witness in the death of Neda Agha-Soltan. REUTERS/Morteza Nikoubazl (IRAN CONFLICT CRIME LAW POLITICS)

Supporters of the United Russia political party hold a rally to remember the victims of the crashed Nevsky express train, at Sennaya Square in St.Petersburg December 2, 2009. A bomb caused a Russian train crash that killed dozens of people and injured 100 more, officials said on Saturday, stoking fears of an upsurge in attacks in Russia's heartland. The banner in the background reads "To find and to destroy". REUTERS/Alexander Demianchuk (RUSSIA CONFLICT CRIME LAW DISASTER IMAGES OF THE DAY)

British artist David Hockney poses for photographers at Tate Britain in London, November 23, 2009. REUTERS/Suzanne Plunkett (BRITAIN ENTERTAINMENT SOCIETY)

Pastor Charles Hudson collects Bibles and hymnals left behind in the Madison School, where Hudson worked with the anti-violence organization Bondage Busters, in Youngstown, Ohio November 21, 2009. Youngstown has 4,500 vacant structures in a city of about 75,000 people, and about 22,000 vacant parcels of land. REUTERS/Brian Snyder (UNITED STATES EDUCATION SOCIETY)

A vendor (L) sells fruit while people pass him by in Tbilisi November 11, 2009. REUTERS/David Mdzinarishvili (GEORGIA SOCIETY EMPLOYMENT BUSINESS)

An artist paints at the edge of the flooded Saint Mark's square during a period of high water in Venice November 3, 2009. REUTERS/Max Rossi (ITALY ENVIRONMENT TRAVEL)

Hip hop artist Mos Def performs during the "Discover Music!" event at Capitol Studios in Hollywood, California October 28, 2009. Google Inc partnered with Web services LaLa and MySpace's iLike to give music fans an easier way to find, sample and buy songs on the Internet. REUTERS/Mario Anzuoni (UNITED STATES ENTERTAINMENT)

A British National Party (BNP) supporter (R) is shouted at by a demonstrator outside the BBC Television Centre studios, in west London October 22, 2009. The planned appearance by the leader of Britain's right-wing BNP on a flagship BBC political programme on Thursday would expose the party as "racist and unacceptable", Prime Minister Gordon Brown said. REUTERS/Kevin Coombs (BRITAIN POLITICS CONFLICT)

Poland's Prime Minister Donald Tusk gestures as he speaks during a conference at the Warsaw Stock Exchange August 28, 2009. Poland's economy grew faster than expected in the second quarter, bucking a regional trend towards contraction and reinforcing the view the central bank would keep interest rates flat in the months ahead, data showed on Friday. In the background is a graph of the Warsaw Stock Exchanges large cap index WIG20. REUTERS/Kacper Pempel (POLAND POLITICS BUSINESS)

Poland's Prime Minister Donald Tusk gestures as he speaks during a conference at the Warsaw Stock Exchange August 28, 2009. Poland's economy grew faster than expected in the second quarter, bucking a regional trend towards contraction and reinforcing the view the central bank would keep interest rates flat in the months ahead, data showed on Friday. In the background is a graph of the Warsaw Stock Exchanges large cap index WIG20. REUTERS/Kacper Pempel (POLAND POLITICS BUSINESS)

A dog jumps a fence on the opening day of the grouse shooting season on the Rottal Estate, Angus Glens, Scotland August 12, 2009. REUTERS/Russell Cheyne (BRITAIN ANIMALS ENVIRONMENT)

Lorie Wheeler (L) and Dillon Oleata, dressed as Marvel Comics' Black Cat and Spider-Man, sit during the 40th annual Comic Con Convention in San Diego July 24, 2009. The convention runs from July 23 to July 26. REUTERS/Mario Anzuoni (UNITED STATES ENTERTAINMENT)

U.S. actor Brad Pitt looks at an unidentified artwork during his visit to the Art Basel art fair June 9, 2009. The Art Basel runs June 10 to 14. REUTERS/Arnd Wiegmann (SWITZERLAND ENTERTAINMENT)

A shepherd looks after his herd in the Carpathian Mountains 750 km (466 miles) west of the Ukrainian capital Kiev, May 30, 2009. Picture taken May 30, 2009. REUTERS/Konstantin Chernichkin (UKRAINE ANIMALS SOCIETY IMAGES OF THE DAY)

Philippine boxing hero Manny Pacquiao walks towards the presidential palace to attend a courtesy call with President Gloria Macapagal Arroyo in Manila May 11, 2009. Filipino boxing icon Manny Pacquiao who demolished IBO light-welterweight champion Ricky Hatton of Britain, paraded around Manila after he had knocked down an order by Philippines health officials to delay his return home due to the new H1N1 flu. REUTERS/Cheryl Ravelo (PHILIPPINES POLITICS SPORT BOXING IMAGES OF THE DAY)

A man walks past a store window displaying food prices on a market street in Sofia April 23, 2009. The Bulgarian economy will shrink this and next year and the government must curb spending to cope with the global crisis and avoid slipping into deficit, the International Monetary Fund said on Wednesday. REUTERS/Stoyan Nenov (BULGARIA POLITICS BUSINESS IMAGE OF THE DAY TOP PICTURE)

People look at job listings at the Careers and Jobs Live careers fair at the ExCeL centre in London April 19, 2009. The number of Britons claiming jobless benefit rose by less than expected in March, although the total in unemployment number surged higher, while government borrowing hit a record high, data showed on April 22, 2009. Photograph taken on April 19, 2009. REUTERS/Luke MacGregor (BRITAIN EMPLOYMENT BUSINESS SOCIETY)

Actress Jessica Biel and entertainer Justin Timberlake share a laugh during the first half of Game 2 of the NBA Western Conference quarter-final playoff basketball game between the Los Angeles Lakers and Utah Jazz in Los Angeles, April 21, 2009. REUTERS/Lucy Nicholson (UNITED STATES SPORT BASKETBALL ENTERTAINMENT)

A demonstrator gestures during an opposition rally demanding President Mikheil Saakashvili's resignation in front of parliament building Tbilisi, April 15, 2009. REUTERS/David Mdzinarishvili (GEORGIA POLITICS CONFLICT)

Former Gurkha soldiers and their supporters hold placards outside the High Court in London March 17, 2009. REUTERS/Stefan Wermuth (BRITAIN MILITARY ENTERTAINMENT SOCIETY)

A punter watches the racing on the first day of the Cheltenham Festival horse racing meeting in Gloucestershire, western England March 10, 2009. REUTERS/ Eddie Keogh (BRITAIN SPORT HORSE RACING HEADSHOT IMAGE OF THE DAY TOP PICTURE)