Alessandro Moretto's artwork 'The Adoration of the Shepherds' is pictured among other paitings, in the closed exhibition hall without visitors of the Gemaeldegalerie Collection, amid the coronavirus disease (COVID-19) pandemic during lockdown, in Berlin, Germany, March 4, 2021. REUTERS/Fabrizio Bensch

Ravi, the father of the two female Asiatic lion cubs which were born during the coronavirus disease (COVID-19) lockdown, is seen inside an enclosure at the Bioparco zoo in Rome, Italy, July 9, 2020. Picture taken July 9, 2020. Picture taken through glass. REUTERS/Guglielmo Mangiapane

One of the two female Asiatic lion cubs which were born during the coronavirus disease (COVID-19) lockdown is seen with the mother Sajani inside their enclosure at the Bioparco zoo in Rome, Italy, July 9, 2020. Picture taken July 9, 2020. Picture taken through glass. REUTERS/Guglielmo Mangiapane

One of the two female Asiatic lion cubs which were born during the coronavirus disease (COVID-19) lockdown is seen inside an enclosure at the Bioparco zoo in Rome, Italy, July 9, 2020. Picture taken July 9, 2020. Picture taken through glass. REUTERS/Guglielmo Mangiapane

Two female Asiatic lion cubs which were born during the coronavirus disease (COVID-19) lockdown are seen with their mother Sajani inside their enclosure at the Bioparco zoo in Rome, Italy, July 9, 2020. Picture taken July 9, 2020. Picture taken through glass. REUTERS/Guglielmo Mangiapane

One of the two female Asiatic lion cubs which were born during the coronavirus disease (COVID-19) lockdown is seen with the father Ravi inside their enclosure at the Bioparco zoo in Rome, Italy, July 9, 2020. Picture taken July 9, 2020. Picture taken through glass. REUTERS/Guglielmo Mangiapane

Two female Asiatic lion cubs which were born during the coronavirus disease (COVID-19) lockdown are seen inside their enclosure at the Bioparco zoo in Rome, Italy, July 9, 2020. Picture taken July 9, 2020. Picture taken through glass. REUTERS/Guglielmo Mangiapane

A man prays in the parking lot below icons in the window of the closed adoration chapel at St. Charles Catholic Church amid the coronavirus disease (COVID-19) outbreak in Providence, Rhode Island, U.S., April 23, 2020. REUTERS/Brian Snyder

A man prays in the parking lot below icons in the window of the closed adoration chapel at St. Charles Catholic Church amid the coronavirus disease (COVID-19) outbreak in Providence, Rhode Island, U.S., April 23, 2020. REUTERS/Brian Snyder

A man prays in the parking lot outside the closed adoration chapel at St. Charles Catholic Church amid the coronavirus disease (COVID-19) outbreak in Providence, Rhode Island, U.S., April 23, 2020. REUTERS/Brian Snyder

A message in support of carers is pictured on a road, amid the coronavirus disease (COVID-19) outbreak, in Liverpool, Britain April 23, 2020. REUTERS/Phil Noble

A signage supporting NHS is pictured on the beach in Blyth as the spread of the coronavirus disease (COVID-19) continues in Britain, April 19, 2020. REUTERS/Lee Smith

Flowers are placed outside Centre d'hebergement Yvon-Brunet, a seniors' long-term care centre, stating "Lie in peace dear mother and adored grandmother", amid the outbreak of the coronavirus disease (COVID-19), in Montreal, Quebec, Canada April 18, 2020. REUTERS/Christinne Muschi

Faithful gather outside a church to participate in an adoration during the Holy Week as the spread of coronavirus disease (COVID-19) continues and churches are closed in Rome, Italy, April 6, 2020. REUTERS/Guglielmo Mangiapane

Faithful gather outside a church to participate in an adoration during the Holy Week as the spread of coronavirus disease (COVID-19) continues and churches are closed in Rome, Italy, April 6, 2020. REUTERS/Guglielmo Mangiapane

Faithful gather outside a church to participate in an adoration during the Holy Week as the spread of coronavirus disease (COVID-19) continues and churches are closed in Rome, Italy, April 6, 2020. REUTERS/Guglielmo Mangiapane

Faithful gather outside a church to participate in an adoration during the Holy Week as the spread of coronavirus disease (COVID-19) continues and churches are closed in Rome, Italy, April 6, 2020. REUTERS/Guglielmo Mangiapane

Faithful gather outside a church to participate in an adoration during the Holy Week as the spread of coronavirus disease (COVID-19) continues and churches are closed in Rome, Italy, April 6, 2020. REUTERS/Guglielmo Mangiapane TPX IMAGES OF THE DAY

Faithful gather outside a church to participate in an adoration during the Holy Week as the spread of coronavirus disease (COVID-19) continues and churches are closed in Rome, Italy, April 6, 2020. REUTERS/Guglielmo Mangiapane

A rainbow made of small paper hearts is seen in a window of Hertford as the spread of the coronavirus disease (COVID-19) continues, Hertford, Britain, April 3, 2020. REUTERS/Andrew Couldridge

Lights form a heart on the Seattle Great Wheel during the coronavirus disease (COVID-19) outbreak in Seattle, Washington, U.S. April 2, 2020. REUTERS/David Ryder

A sign in a window thanks "Essential Heroes" amid the coronavirus disease (COVID-19) outbreak in Boston, Massachusetts, U.S., April 2, 2020. REUTERS/Brian Snyder

A woman stands inside a shop offering lingerie for Valentine's Day in Damascus, Syria February 13, 2020. Picture taken February 13, 2020. REUTERS/Yamam Al Shaar

Participants hug each other during a dance break during the Yangon Pride Boat Parade in Yangon, Myanmar, January, 18, 2020. REUTERS/Ann Wang

Hoar-frost covered trees are seen at a lake on a foggy day near Csomor, Hungary, January 17, 2020. REUTERS/Bernadett Szabo

Hoar-frost covered trees are seen at a lake on a foggy day near Csomor, Hungary, January 17, 2020. REUTERS/Bernadett Szabo

A hoar-frost covered tree is seen on a foggy day near Csomor, Hungary, January 17, 2020. REUTERS/Bernadett Szabo TPX IMAGES OF THE DAY

A Jungfraubahnen train carriage makes its way up to Jungfraujoch at the Kleine Scheidegg near Wengen, Switzerland January 16, 2020. REUTERS/Leonhard Foeger

Climbers trek on the Perito Moreno glacier, near the city of El Calafate in the Patagonian province of Santa Cruz, Argentina January 14, 2020. Picture taken January 14, 2020. REUTERS/Agustin Marcarian

A general view of the Perito Moreno glacier, near the city of El Calafate in the Patagonian province of Santa Cruz, Argentina January 14, 2020. Picture taken January 14, 2020. REUTERS/Agustin Marcarian

Tourists look at the Perito Moreno glacier, near the city of El Calafate in the Patagonian province of Santa Cruz, Argentina January 14, 2020. Picture taken January 14, 2020. REUTERS/Agustin Marcarian

A man walks under the Brankov bridge amidst dense fog and smog in Belgrade, Serbia, January 15, 2020. REUTERS/Marko Djurica

A woman walks under the Brankov bridge amidst dense fog and smog in Belgrade, Serbia, January 15, 2020. REUTERS/Marko Djurica

A watchtower is photographed at the fenced area which will be used as heliport during the upcoming World Economic Forum (WEF) in Davos, Switzerland Januar 13, 2020. REUTERS/Arnd Wiegmann

The sun sets over snow-covered field as seen from a train heading to the coal city of Hegang, in Heilongjiang province, northeast China January 1, 2020. Picture taken January 1, 2020. REUTERS/Ryan Woo

A couple embrace before participating in the annual "No Pants Subway Ride" in New York City, U.S., January 12, 2020. REUTERS/Brendan McDermid

Soldiers patrol the Mormon community in La Mora, Sonora, Mexico January 10, 2020. Picture taken on January 10, 2020. REUTERS/Carlos Jasso

Moonset is seen near La Mora, Sonora, Mexico January 11, 2020. Picture taken on January 11, 2020. REUTERS/Carlos Jasso

The full moon rises behind a street light during the penumbral lunar eclipse in Yevpatoriya, Crimea January 10, 2020. Picture taken January 10, 2020. REUTERS/Alexey Pavlishak

The full moon rises behind a street light during the penumbral lunar eclipse in Yevpatoriya, Crimea January 10, 2020. Picture taken January 10, 2020. REUTERS/Alexey Pavlishak

The full moon is seen rising behind a street light during the penumbral lunar eclipse in Ronda, near Malaga, southern Spain January 10, 2020. REUTERS/Jon Nazca TPX IMAGES OF THE DAY

The full moon is seen rising behind an electric tower during the penumbral lunar eclipse in Ronda, near Malaga, southern Spain January 10, 2020. REUTERS/Jon Nazca

The full moon is seen rising behind a tree during the penumbral lunar eclipse in Ronda, near Malaga, southern Spain January 10, 2020. REUTERS/Jon Nazca

Moon is seen behind the mountain seen from the Presena Glacier, in Passo Paradiso, Italy, January 9, 2020. Picture taken January 9, 2020. REUTERS/Yara Nardi

Mountains are seen from the Presena Glacier, in Passo Paradiso, Italy, January 9, 2020. Picture taken January 9, 2020. REUTERS/Yara Nardi

A general view shows deep cracks on the bottom of Studena dam near Pernik, Bulgaria, December 8, 2020. Picture taken December 8, 2020. REUTERS/Dimitar Kyosemarliev

A general view shows Studena dam near Pernik, Bulgaria, December 8, 2020. Picture taken December 8, 2020. REUTERS/Dimitar Kyosemarliev

People gather at a deck on the banks of Guaiba River, as a dark horizon caused by smoke from Australia's bush fires is seen, in Porto Alegre, Brazil January 8, 2020. REUTERS/Diego Vara

A murmuration of migrating starlings fly in a group near Kiryat Gat, southern Israel January 2, 2020. Picture taken January 2, 2020. REUTERS/Amir Cohen

Swans swim in a partly frozen lake during sunrise in Minsk, Belarus January 3, 2020. REUTERS/Vasily Fedosenko

Swans paddle on Loch Faskally, Pitlochry, Scotland, Britain October 26, 2019. REUTERS/Russell Cheyne

An infrared reflectography of the painting "The Adoration of the Magi" by Leonardo da Vinci is pictured during a press visit of the "Leonardo da Vinci" exhibition to commemorate the 500-year anniversary of his death at the Louvre Museum in Paris, France October 20, 2019. REUTERS/Benoit Tessier

A heart-shaped Chinese flag installation ahead of the 70th founding anniversary of People's Republic of China is seen on a street in Shanghai, China, September 26, 2019. Picture taken with a slow shutter speed and a zoom effect. REUTERS/Aly Song

A heart-shaped Chinese flag installation ahead of the 70th founding anniversary of People's Republic of China is seen on a street in Shanghai, China September 26, 2019. Picture taken with a slow shutter speed and a zoom effect. REUTERS/Aly Song