A couple kisses on a bench in a park during a sunny and warm spring day in central Kyiv, Ukraine May 11, 2021. REUTERS/Gleb Garanich

A couple takes a selfie amid cherry blossoms in a park during a sunny and warm spring day in central Kyiv, Ukraine May 11, 2021. REUTERS/Gleb Garanich

A woman takes pictures of blooming tulips in a park during a sunny and warm spring day in central Kyiv, Ukraine May 11, 2021. REUTERS/Gleb Garanich

A woman wearing a mask takes a walk on a sunny day amid the coronavirus disease (COVID-19) pandemic at the Cheonggye stream in Seoul, South Korea, May 11, 2021. REUTERS/Kim Hong-Ji

A woman wearing a mask uses a mobile phone on a sunny day amid the coronavirus disease (COVID-19) pandemic at the Cheonggye stream in Seoul, South Korea, May 11, 2021. REUTERS/Kim Hong-Ji

People relax at Landswehrkanal in Kreuzberg District on a sunny, warm day in Berlin, Germany, May 10, 2021. REUTERS/Michele Tantussi

People paddle on rubber boats at Landswehrkanal in Kreuzberg District on a sunny, warm day in Berlin, Germany, May 10, 2021. REUTERS/Michele Tantussi

People relax at Landswehrkanal in Kreuzberg District on a sunny, warm day in Berlin, Germany, May 10, 2021. REUTERS/Michele Tantussi

People relax at Landswehrkanal in Kreuzberg District on a sunny, warm day in Berlin, Germany, May 10, 2021. REUTERS/Michele Tantussi

A swan lifts off as people paddle on a rubber boat at Landswehrkanal in Kreuzberg District on a sunny, warm day in Berlin, Germany, May 10, 2021. REUTERS/Michele Tantussi

People paddle on rubber boats at the Landswehrkanal in Kreuzberg District on a sunny, warm day in Berlin, Germany, May 10, 2021. REUTERS/Michele Tantussi

People enjoy the sunny weather on the bank of the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

A man relaxes in a hammock as he enjoys the sunny weather in Volkspark Friedrichshain, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Annegret Hilse

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People ride on boats as they enjoy the sunny weather on the Landwehrkanal, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

People play basketball at the Mauerpark, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Annegret Hilse

People enjoy the sunny weather, as the spread of the coronavirus disease (COVID-19) continues, at the Mauerpark, in Berlin, Germany, May 9, 2021. REUTERS/Annegret Hilse

People enjoy the sunny weather on a beach at Lake Starnberg, as the number of coronavirus disease (COVID-19) infections decreases in Starnberg, Germany, May 9, 2021. REUTERS/Andreas Gebert

People enjoy the sunny weather on Lake Starnberg, as the number of coronavirus disease (COVID-19) infections decreases in Starnberg, Germany, May 9, 2021. REUTERS/Andreas Gebert

People enjoy the sunny weather on Lake Starnberg, as the number of coronavirus disease (COVID-19) infections decreases in Starnberg, Germany, May 9, 2021. REUTERS/Andreas Gebert

People enjoy the sunny weather, as the spread of the coronavirus disease (COVID-19) continues, at the Mauerpark, in Berlin, Germany, May 9, 2021. REUTERS/Annegret Hilse

People enjoy the sunny weather, as the spread of the coronavirus disease (COVID-19) continues, at the Mauerpark, in Berlin, Germany, May 9, 2021. REUTERS/Annegret Hilse

People enjoy the sunny weather, as the spread of the coronavirus disease (COVID-19) continues, at the Mauerpark, in Berlin, Germany, May 9, 2021. REUTERS/Annegret Hilse

People enjoy the sunny weather, as the spread of the coronavirus disease (COVID-19) continues, at the Mauerpark, in Berlin, Germany, May 9, 2021. REUTERS/Annegret Hilse

People enjoy the sunny weather, as the spread of the coronavirus disease (COVID-19) continues, at the Mauerpark, in Berlin, Germany, May 9, 2021. REUTERS/Annegret Hilse

People enjoy the sunny weather in kayaks on the river Spree, as the spread of the coronavirus disease (COVID-19) continues, in Berlin, Germany, May 9, 2021. REUTERS/Christian Mang

A woman poses for a picture under the cherry blossom tree during sunny day in Riga, Latvia May 9, 2021 REUTERS/Ints Kalnins

People gather next to the cherry blossom trees during sunny day in Riga, Latvia May 9, 2021 REUTERS/Ints Kalnins

A woman poses for a picture under the cherry blossom tree during sunny day in Riga, Latvia May 9, 2021 REUTERS/Ints Kalnins

People meet and enjoy the sunny weather in Volkspark Friedrichshain, amid the coronavirus disease (COVID-19) pandemic, in Berlin, Germany May 8, 2021. REUTERS/Annegret Hilse

Clouds frame palm trees on the Promenade des Anglais during a sunny weather amid the coronavirus disease (COVID-19) outbreak in Nice, France May 7, 2021. REUTERS/Eric Gaillard

An employee cleans a window of the city hall near blooming tulips on a sunny spring day in central Kyiv, Ukraine May 5, 2021. REUTERS/Gleb Garanich

People ride with a dog in an open-top car during a sunny day in London, Britain, May 1, 2021. REUTERS/Toby Melville

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards celebrates winning the fight as Moruti Mthalane looks dejected Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards celebrates winning the fight with his team Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards makes his entrance before the fight Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards celebrates winning the fight as Moruti Mthalane looks dejected Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards celebrates winning the fight with his team Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards celebrates winning the fight Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards celebrates after the fight as Moruti Mthalane looks on Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards in action against Moruti Mthalane Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards in action against Moruti Mthalane Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards in action against Moruti Mthalane Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Moruti Mthalane during the fight Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards in action against Moruti Mthalane Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Moruti Mthalane makes his entrance before his fight Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Moruti Mthalane walks to the ring before his fight Action Images via Reuters/Andrew Couldridge

Boxing - Moruti Mthalane v Sunny Edwards - IBF World Flyweight Title - York Hall, London, Britain - April 30, 2021 Sunny Edwards in action against Moruti Mthalane Action Images via Reuters/Andrew Couldridge

Tourists enjoy a sunny day outside the Ayasofya-i Kebir Camii or Hagia Sophia Grand Mosque during a nationwide "full closure" until May 17 including a continuous lockdown amid the spread of the coronavirus disease (COVID-19), in Istanbul, Turkey, April 30, 2021. REUTERS/Umit Bektas

People enjoy a warm and sunny day at a park a few hours before the start of a nationwide "full closure" until May 17 including a continuous lockdown amid the spread of the coronavirus disease (COVID-19), in Istanbul, Turkey, April 29, 2021. REUTERS/Umit Bektas

People enjoy a warm and sunny day at a park a few hours before the start of a nationwide "full closure" until May 17 including a continuous lockdown amid the spread of the coronavirus disease (COVID-19), in Istanbul, Turkey, April 29, 2021. REUTERS/Umit Bektas

People enjoy a warm and sunny day the beach a few hours before the start of a nationwide "full closure" until May 17 including a continuous lockdown amid the spread of the coronavirus disease (COVID-19), in Istanbul, Turkey, April 29, 2021. REUTERS/Umit Bektas