A woman walks with an umbrella across a bridge during the Tokyo 2020 Olympic Games in Tokyo, Japan, August 1, 2021. REUTERS/Mike Segar

A portion of the Tokyo skyline is seen from a taxi crossing a bridge during the Tokyo 2020 Olympic Games in Tokyo, Japan, August 1, 2021. REUTERS/Mike Segar

Tokyo 2020 Olympics - BMX Freestyle - Women's Park - Final - Ariake Urban Sports Park, Tokyo, Japan - August 1, 2021. People watch the event from a bridge. REUTERS/Christian Hartmann

A provisional bridge built by workers of the Technische Hilfswerk (THW) is seen following heavy rainfalls in Bad Neuenahr-Ahrweiler, Germany, July 31, 2021. REUTERS/Leon Kuegeler

A provisional bridge built by workers of the Technische Hilfswerk (THW) is seen following heavy rainfalls in Bad Neuenahr-Ahrweiler, Germany, July 31, 2021. REUTERS/Leon Kuegeler

Migrants expelled from the U.S. and sent back to Mexico under Title 42 walk across the Paso del Norte International border bridge, in Ciudad Juarez, Mexico July 29, 2021. REUTERS/Jose Luis Gonzalez

Migrants expelled from the U.S. and sent back to Mexico under Title 42 walk across the Paso del Norte International border bridge, in Ciudad Juarez, Mexico July 29, 2021. REUTERS/Jose Luis Gonzalez

Migrants expelled from the U.S. and sent back to Mexico under Title 42 walk towards Mexico at the Paso del Norte International border bridge, in this picture taken from Ciudad Juarez, Mexico July 29, 2021. REUTERS/Jose Luis Gonzalez

A migrant expelled from the U.S. and sent back to Mexico under Title 42 carries his belongings inside a plastic bag while crossing the Paso del Norte international border bridge, in Ciudad Juarez, Mexico July 29, 2021. REUTERS/Jose Luis Gonzalez

Migrants expelled from the U.S. and sent back to Mexico under Title 42 walk towards Mexico at the Paso del Norte International border bridge, in this picture taken from Ciudad Juarez, Mexico July 29, 2021. REUTERS/Jose Luis Gonzalez

Migrants expelled from the U.S. and sent back to Mexico under Title 42 walk across the Paso del Norte International border bridge, in Ciudad Juarez, Mexico July 29, 2021. REUTERS/Jose Luis Gonzalez

Migrants expelled from the U.S. and sent back to Mexico under Title 42 walk towards Mexico at the Paso del Norte International border bridge, in this picture taken from Ciudad Juarez, Mexico July 29, 2021. REUTERS/Jose Luis Gonzalez

People walk over London Bridge during morning rush hour, amid the coronavirus disease (COVID-19) pandemic in London, Britain, July 29, 2021. REUTERS/Henry Nicholls

People walk over London Bridge during morning rush hour, amid the coronavirus disease (COVID-19) pandemic in London, Britain, July 29, 2021. REUTERS/Henry Nicholls

A person cycles over London Bridge during morning rush hour, amid the coronavirus disease (COVID-19) pandemic in London, Britain, July 29, 2021. REUTERS/Henry Nicholls

Workers labour on a bridge in Sapporo, Japan, July 28, 2021. Picture taken July 28, 2021 from behind glass. REUTERS/Kim Hong-Ji

Mexican citizens queue to be transferred to the U.S. via the international border bridge of Tornillo-Guadalupe to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, in Ciudad Juarez, Mexico July 28, 2021. REUTERS/Jose Luis Gonzalez

Mexican citizens queue to be transferred to the U.S. via the international border bridge of Tornillo-Guadalupe to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, in Ciudad Juarez, Mexico July 28, 2021. REUTERS/Jose Luis Gonzalez

Mexican citizens fill out applications before being transferred to the U.S. via the international border bridge of Tornillo-Guadalupe to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, in Ciudad Juarez, Mexico July 28, 2021. REUTERS/Jose Luis Gonzalez

Mexicans are transferred to the U.S. via the international border bridge of Tornillo-Guadalupe, to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, in Tornillo, Texas, U.S., July 28, 2021. REUTERS/Jose Luis Gonzalez

A Mexican citizen gestures aboard a bus before being transferred to the U.S. via the international border bridge of Tornillo-Guadalupe, to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, in Ciudad Juarez, Mexico July 28, 2021. REUTERS/Jose Luis Gonzalez

Mexicans are transferred to the U.S. via the international border bridge of Tornillo-Guadalupe, to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, in Tornillo, Texas, U.S., July 28, 2021. REUTERS/Jose Luis Gonzalez

Mexicans are transferred to the U.S. via the international border bridge of Tornillo-Guadalupe, to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, in Ciudad Juarez, Mexico July 28, 2021. REUTERS/Jose Luis Gonzalez

Mexicans wait to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, at the Tornillo-Guadalupe international bridge, in Tornillo, Texas, U.S., July 28, 2021. REUTERS/Jose Luis Gonzalez

Mexicans are transferred to the U.S. via the international border bridge of Tornillo-Guadalupe, to receive a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, in Tornillo, Texas, U.S., July 28, 2021. REUTERS/Jose Luis Gonzalez

A Mexican woman receives a dose of the Johnson & Johnson coronavirus disease (COVID-19) vaccine, during a binational vaccination program, at the Tornillo-Guadalupe international bridge, in Tornillo, Texas, U.S., July 28, 2021. REUTERS/Jose Luis Gonzalez

People walk over London Bridge, amid the coronavirus disease (COVID-19) pandemic in London, Britain, July 27, 2021. REUTERS/Henry Nicholls

Tower Bridge can be seen as people walk along the River Thames, amid the coronavirus disease (COVID-19) pandemic in London, Britain, July 27, 2021. REUTERS/Henry Nicholls

Tower Bridge can be seen as people walk along the River Thames, amid the coronavirus disease (COVID-19) pandemic in London, Britain, July 27, 2021. REUTERS/Henry Nicholls

Tower Bridge can be seen as people walk along the River Thames, amid the coronavirus disease (COVID-19) pandemic in London, Britain, July 27, 2021. REUTERS/Henry Nicholls

Tower Bridge can be seen as people walk along the River Thames, amid the coronavirus disease (COVID-19) pandemic in London, Britain, July 27, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

People run across Westminster Bridge while taking part in the ASICS London 10k event in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

Signs advising to maintain social distance and warning against drinking alcohol on the promenade are displayed on a bench seat near the Ariake Yume-no-Ohashi Bridge, during the Tokyo 2020 Olympic Games in Tokyo, Japan July 25, 2021. REUTERS/Issei Kato

Tokyo 2020 Olympics - Cycling - Road - Women's Road Race - Final - Tokyo to Fuji International Speedway - Tokyo, Japan - July 25, 2021. General view of the Ogura Bridge during the Women's Road Race. Pool via REUTERS/Michael Steele

A man crosses the Rainbow Bridge during the coronavirus disease (COVID-19) pandemic in Tokyo, Japan, July 25, 2021. REUTERS/Kevin Coombs

The second Olympic flame cauldron is seen at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games, in Tokyo, Japan July 24, 2021. REUTERS/Kim Kyung-Hoon

Four-year-old boy So lshida wearing a protective mask holds Japanese national flag in front of the second Olympic flame cauldron at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Kim Kyung-Hoon

A police officer stands guard next to the second Olympic flame cauldron (not in the photo) at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Kim Kyung-Hoon

People take pictures of the second Olympic flame cauldron at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Kim Kyung-Hoon

The second Olympic flame cauldron is seen at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Kim Kyung-Hoon

A staff holds a signboard advising to maintain social distance next to the second Olympic flame cauldron at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Kim Kyung-Hoon

The second Olympic flame cauldron is seen at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Kim Kyung-Hoon

Tokyo 2020 Olympics - Tennis - Women's Singles - Round 1 - Ariake Tennis Park - Tokyo, Japan - July 24, 2021. Police officers on a bridge REUTERS/Mike Segar

Tokyo 2020 Olympics - Tennis - Women's Singles - Round 1 - Ariake Tennis Park - Tokyo, Japan - July 24, 2021. Police officers on a bridge REUTERS/Mike Segar

A staff member encourages visitors to maintain social distance near the second Olympic flame cauldron on the Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

The second Olympic flame cauldron is seen next to a signboard advising to maintain social distance at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

The second Olympic flame cauldron is seen next to a signboard advising to maintain social distance at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

The second Olympic flame cauldron is seen on the Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

The second Olympic flame cauldron is seen through a fence on the Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

The second Olympic flame cauldron is seen on the Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

The second Olympic flame cauldron is seen on the Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato