Women wearing protective masks walk past a shop decorated with artificial maple leaves, amid the COVID-19 outbreak, on the last day of the state of emergency, in Tokyo, Japan, September 30, 2021. REUTERS/Kim Kyung-Hoon

A marble depiction of a soldier sits mounted on the Confederate Memorial at the Maple Hill Cemetery in Helena, Arkansas, U.S., August 13, 2021. Picture taken August 13, 2021. REUTERS/Shannon Stapleton

Flags are seen placed at the base of the Confederate Memorial at the Maple Hill Cemetery in Helena, Arkansas, U.S., August 13, 2021. REUTERS/Shannon Stapleton

A woman jumps into the water at Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

A man jumps into the water at Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

People head to Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

People swim in Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

Kim Cullen and her granddaughter Ella are at Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

People head to Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

People head to Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

Beachgoers sit in the water at Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

People headed to Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

People headed to Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

People cool off in Alouette Lake during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

Beachgoers sit in the water at Alouette Lake to cool off during the scorching weather of a heatwave in Maple Ridge, British Columbia, Canada June 28, 2021. REUTERS/Jennifer Gauthier

U.S. Senator Kirsten Gillibrand (D-NY) walks her dog "Maple" outside the U.S. Capitol on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senator Kirsten Gillibrand (D-NY) walks her dog "Maple" outside the U.S. Capitol on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senator Kirsten Gillibrand (D-NY) walks her dog "Maple" outside the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

A grey squirrel forages for spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel eats spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel eats spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel forages for spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel forages for spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel eats spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel forages for spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel eats spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel eats spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel balances along a thin twig to forage for spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

A grey squirrel forages for spring flower buds on a Japanese Maple tree at the National Botanic Gardens in Dublin, Ireland, March 23, 2021. REUTERS/Clodagh Kilcoyne

Visitors watch as sap from maple trees is boiled down into maple syrup in the evaporator in the sugar house at Hollis Hills Farm in Fitchburg, Massachusetts, U.S., March 13, 2021. REUTERS/Brian Snyder

Maple syrup is poured out of the evaporator in the sugar house at Hollis Hills Farm in Fitchburg, Massachusetts, U.S., March 13, 2021. REUTERS/Brian Snyder

Maple syrup is poured out of the evaporator in the sugar house at Hollis Hills Farm in Fitchburg, Massachusetts, U.S., March 13, 2021. REUTERS/Brian Snyder

Sap from a maple tree drips into a bucket to be boiled down into maple syrup at Hollis Hills Farm in Fitchburg, Massachusetts, U.S., March 13, 2021. REUTERS/Brian Snyder

Visitors watch as sap from maple trees is boiled down into maple syrup in the evaporator in the sugar house at Hollis Hills Farm in Fitchburg, Massachusetts, U.S., March 13, 2021. REUTERS/Brian Snyder

Jeong Sang-rok, a parcel delivery worker for Hanjin Transportation, pushes a trolley with a package past a red maple tree in Gwangju, South Korea, November 10, 2020. Picture taken November 10, 2020. REUTERS/Kim Hong-Ji REFILE - CORRECTING NAME OF COMPANY

Couple takes photographs of maple leaves on a late autumn day amid the COVID-19 pandemic at a park in Seoul, South Korea, November 13, 2020. REUTERS/Kim Hong-Ji

Women pose for photographs in front of maple leaves on a late autumn day amid the COVID-19 pandemic at a park in Seoul, South Korea, November 13, 2020. REUTERS/Kim Hong-Ji

One of the last red leaves on a maple tree is seen in autumn colours in Bourlon, France, November 3, 2020. REUTERS/Pascal Rossignol

One of the last red leaves on a maple tree is seen in autumn colours in Bourlon, France, November 3, 2020. REUTERS/Pascal Rossignol

Members of the Winnipeg Fire Paramedic Service wear personal protective gear as they depart Maples Personal Care Home, which is experiencing an outbreak of the coronavirus disease (COVID-19), in Winnipeg, Manitoba, Canada, November 2, 2020. REUTERS/Shannon VanRaes

Members of the Winnipeg Fire Paramedic Service wear personal protective gear as they depart Maples Personal Care Home, which is experiencing an outbreak of the coronavirus disease (COVID-19), in Winnipeg, Manitoba, Canada, November 2, 2020. REUTERS/Shannon VanRaes

A man wearing a mask and face shield walks past the Maples Personal Care Home, which is experiencing an outbreak of the coronavirus disease (COVID-19), in Winnipeg, Manitoba, Canada, November 2, 2020. REUTERS/Shannon VanRaes

A man wearing a mask and face shield walks past the Maples Personal Care Home, which is experiencing an outbreak of the coronavirus disease (COVID-19), in Winnipeg, Manitoba, Canada, November 2, 2020. REUTERS/Shannon VanRaes

Members of the Winnipeg Fire Paramedic Service wear personal protective gear as they depart Maples Personal Care Home, which is experiencing an outbreak of the coronavirus disease (COVID-19), in Winnipeg, Manitoba, Canada, November 2, 2020. REUTERS/Shannon VanRaes

Members of the Winnipeg Fire Paramedic Service remove personal protective gear after departing Maples Personal Care Home, which is experiencing an outbreak of the coronavirus disease (COVID-19), in Winnipeg, Manitoba, Canada, November 2, 2020. REUTERS/Shannon VanRaes

A view of Maple Leaf Dairy, one of the food producers in the area that employs many food workers, as rural hunger rises due to the coronavirus disease (COVID-19) in Manitowoc, Wisconsin, U.S. October 23, 2020. Picture taken October 23, 2020. REUTERS/Gabriela Bhaskar

A view of Maple Leaf Dairy, one of the food producers in the area that employs many food workers, as rural hunger rises due to the coronavirus disease (COVID-19) in Manitowoc, Wisconsin, U.S. October 23, 2020. Picture taken October 23, 2020. REUTERS/Gabriela Bhaskar

Grain elevators are seen at Maple River Grain & Agronomy, an agricultural co-op, as the coronavirus disease (COVID-19) outbreak continues in Casselton, North Dakota, U.S., October 25, 2020. Picture taken October 25, 2020. REUTERS/Bing Guan

Grain elevators are seen at Maple River Grain & Agronomy, an agricultural co-op, as the coronavirus disease (COVID-19) pandemic continues in Casselton, North Dakota, U.S., October 25, 2020. Picture taken October 25, 2020. REUTERS/Bing Guan

Red leaves are seen on a maple during the autumn season, in Bourlon, France, October 11, 2020. REUTERS/Pascal Rossignol

Red leaves are seen on a maple during the autumn season, in Bourlon, France, October 11, 2020. REUTERS/Pascal Rossignol

Red leaves are seen on a maple during the autumn season, in Bourlon, France, October 11, 2020. REUTERS/Pascal Rossignol

People sit in a car for an outdoor movie projection at the Maple Garden Drive-in Cinema, during Beijing International Film Festival following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 24, 2020. REUTERS/Tingshu Wang

People wearing face masks sit in a car for an outdoor movie projection at the Maple Garden Drive-in Cinema, during Beijing International Film Festival following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 24, 2020. REUTERS/Tingshu Wang

Cars line up to enter the Maple Garden Drive-in Cinema during Beijing International Film Festival, following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 24, 2020. REUTERS/Tingshu Wang

A staff member holds a thermometer for temperature checks as he requires people to scan a health code at the entrance of the Maple Garden Drive-in Cinema, during Beijing International Film Festival following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 24, 2020. REUTERS/Tingshu Wang

People sit in a Tesla car provided by the cinema for audience who do not have a car, at the Maple Garden Drive-in Cinema, during Beijing International Film Festival following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 24, 2020. REUTERS/Tingshu Wang

People sit on chairs next to their car as they watch an outdoor movie projection at the Maple Garden Drive-in Cinema, during Beijing International Film Festival following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 24, 2020. REUTERS/Tingshu Wang

A staff member checks people's health code as they enter the Maple Garden Drive-in Cinema for an outdoor movie projection during Beijing International Film Festival, following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 24, 2020. REUTERS/Tingshu Wang

People sit in cars for an outdoor movie projection during Beijing International Film Festival at the Maple Garden Drive-in Cinema, following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 24, 2020. REUTERS/Tingshu Wang