An usher wears a protective face shield before the start of "The Persians" an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

People wearing protective face masks enter the ancient amphitheatre of Epidaurus to watch "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

Actors perform in "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

People wait for the start of "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

People wearing protective face masks wait for the start of "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

People wearing protective face masks take a selfie as they wait for the start of "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

Actors perform in "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

People waring protective face masks wait for the start of "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

Ushers wear protective face shields, before the start of "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

Actors perform in "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

People wait for the start of "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

Greek actor Lydia Koniordou performs in "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

People wait for the start of "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

Greek actor Lydia Koniordou performs in "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

Greek actor Lydia Koniordou performs in "The Persians", an ancient Greek drama by Aeschylus first performed in 472 BC, following the easing of measures against the spread of the coronavirus disease (COVID-19), at the ancient amphitheatre of Epidaurus, Greece, July 24, 2020. Picture taken July 24, 2020. REUTERS/Costas Baltas

Alla Malova practices a modified Persian Sufi dance in St James's Park, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 21, 2020. REUTERS/John Sibley

Alla Malova practices a modified Persian Sufi dance in St James's Park, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 21, 2020. REUTERS/John Sibley

Alla Malova practices a modified Persian Sufi dance in St James's Park, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 21, 2020. REUTERS/John Sibley

Actor Lars Eidinger cries during a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Screenwriter and producer Ilja Zofin speaks during a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Director Vadim Perelman and actors Lars Eidinger and Nahuel Perez Biscayart pose after a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Actor Lars Eidinger wipes a tear as he attends a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Actor Lars Eidinger cries during a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Director Vadim Perelman, producers Ilya Stewart and Ilja Zofin, co-producer Sol Bondy and actors Lars Eidinger and Nahuel Perez Biscayart attend a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Actor Lars Eidinger reacts as he attends a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Actor Lars Eidinger speaks during a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Actor Nahuel Perez Biscayart speaks during a news conference to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Director Vadim Perelman, producers Ilya Stewart and Ilja Zofin, co-producer Sol Bondy and actors Jonas Nay, Lars Eidinger, Nahuel Perez Biscayart attend a photo call to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Actors Nahuel Perez Biscayart and Lars Eidinger attend a photo call to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Actor Lars Eidinger attends a photo call to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Actors Nahuel Perez Biscayart and Lars Eidinger attend a photo call to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

Director Vadim Perelman attends a photo call to promote the movie "Persian Lessons" during the 70th Berlinale International Film Festival in Berlin, Germany, February 22, 2020. REUTERS/Annegret Hilse

A Persian leopard cub is seen at the zoo in Cologne, Germany, July 18, 2019. REUTERS/Thilo Schmuelgen

A Persian leopard cub is seen at the zoo in Cologne, Germany, July 18, 2019. REUTERS/Thilo Schmuelgen

A Persian leopard cub is seen at the zoo in Cologne, Germany, July 18, 2019. REUTERS/Thilo Schmuelgen

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 William Buick celebrates winning the Longines Dubai Sheema Classic on Old Persian REUTERS/Ahmed Jadallah

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 William Buick celebrates winning the Longines Dubai Sheema Classic on Old Persian REUTERS/Ahmed Jadallah

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 William Buick celebrates winning the Longines Dubai Sheema Classic on Old Persian REUTERS/Ahmed Jadallah

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 William Buick celebrates winning the Longines Dubai Sheema Classic on Old Persian REUTERS/Ahmed Jadallah

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 Old Persian ridden by William Buick during the Longines Dubai Sheema Classic REUTERS/Ahmed Jadallah

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 Old Persian ridden by William Buick during the Longines Dubai Sheema Classic REUTERS/Ahmed Jadallah

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 William Buick celebrates winning the Longines Dubai Sheema Classic on Old Persian REUTERS/Christopher Pike

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 William Buick celebrates winning the Longines Dubai Sheema Classic on Old Persian REUTERS/Christopher Pike

Horse Racing - Dubai World Cup - Meydan Racecourse, Dubai, United Arab Emirates - March 30, 2019 Old Persian ridden by William Buick wins the Longines Dubai Sheema Classic REUTERS/Christopher Pike

A man touches the wall of a Parsi fire temple featuring huge carvings of ancient priests on the occasion of the Persian New Year in Mumbai, India, March 21, 2019. REUTERS/Francis Mascarenhas TPX IMAGES OF THE DAY

A man touches the wall of a Parsi fire temple featuring huge carvings of ancient priests on the occasion of the Persian New Year in Mumbai, India, March 21, 2019. REUTERS/Francis Mascarenhas

An information board written in French and Persian is seen next to the entrance of the garden where Iran's late leader Ayatollah Ruhollah Khomeini used to pray during his four month exile in Neauphle-le-Chateau, near Paris, France, January 29, 2019. Picture taken January 29, 2019. REUTERS/ Christian Hartmann

A worker cleans an information board written in French and Persian next to the entrance of the garden where Iran's late leader Ayatollah Ruhollah Khomeini used to pray during his four month exile in Neauphle-le-Chateau, near Paris, France, January 29, 2019. Picture taken January 29, 2019. REUTERS/ Christian Hartmann

An information board written in French and Persian is seen next to the entrance of the garden where Iran's late leader Ayatollah Ruhollah Khomeini used to pray during his four month exile in Neauphle-le-Chateau, near Paris, France, January 29, 2019. Picture taken January 29, 2019. REUTERS/ Christian Hartmann

A worker cleans an information board written in French and Persian next to the entrance of the garden where Iran's late leader Ayatollah Ruhollah Khomeini used to pray during his four month exile in Neauphle-le-Chateau, near Paris, France, January 29, 2019. Picture taken January 29, 2019. REUTERS/ Christian Hartmann

An information board written in French and Persian is seen next to the entrance of the garden where Iran's late leader Ayatollah Ruhollah Khomeini used to pray during his four month exile in Neauphle-le-Chateau, near Paris, France, January 29, 2019. Picture taken January 29, 2019. REUTERS/ Christian Hartmann

A worker cleans an information board written in French and Persian next to the entrance of the garden where Iran's late leader Ayatollah Ruhollah Khomeini used to pray during his four month exile in Neauphle-le-Chateau, near Paris, France, January 29, 2019. Picture taken January 29, 2019. REUTERS/ Christian Hartmann

Horse Racing - Royal Ascot - Ascot Racecourse, Ascot, Britain - June 22, 2018 Old Persian ridden by William Buick before winning the 3.05 King Edward VII Stakes Action Images via Reuters/Andrew Boyers

Horse Racing - Royal Ascot - Ascot Racecourse, Ascot, Britain - June 22, 2018 Old Persian ridden by William Buick before winning the 3.05 King Edward VII Stakes Action Images via Reuters/Paul Childs

Horse Racing - Royal Ascot - Ascot Racecourse, Ascot, Britain - June 22, 2018 William Buick celebrates after winning the 3.05 King Edward VII Stakes on Old Persian Action Images via Reuters/Paul Childs

Horse Racing - Royal Ascot - Ascot Racecourse, Ascot, Britain - June 22, 2018 William Buick celebrates after winning the 3.05 King Edward VII Stakes on Old Persian Action Images via Reuters/Andrew Boyers

Horse Racing - Royal Ascot - Ascot Racecourse, Ascot, Britain - June 22, 2018 William Buick celebrates after winning the 3.05 King Edward VII Stakes on Old Persian Action Images via Reuters/Andrew Boyers