French Economy and Finance Minister Bruno Le Maire delivers a speech before unveiling a painting by Spanish painter Pablo Picasso at the Picasso Museum in Paris, France, September 20, 2021. France will receive nine new artworks by the late Pablo Picasso after his daughter Maya Ruiz Picasso agreed to donate them to the country, French Finance Minister Bruno Le Maire said on Monday. Come Sittler/Pool via REUTERS

Pablo Picasso's grandson Olivier Widmaier Picasso delivers a speech before unveiling a painting by Spanish painter Pablo Picasso at the Picasso Museum in Paris, France, September 20, 2021. France will receive nine new artworks by the late Pablo Picasso after his daughter Maya Ruiz Picasso agreed to donate them to the country, French Finance Minister said on Monday. Come Sittler/Pool via REUTERS

Pablo Picasso's grandson Olivier Widmaier Picasso delivers a speech before unveiling a painting by Spanish painter Pablo Picasso at the Picasso Museum in Paris, France, September 20, 2021. France will receive nine new artworks by the late Pablo Picasso after his daughter Maya Ruiz Picasso agreed to donate them to the country, French Finance Minister said on Monday. Come Sittler/Pool via REUTERS

General manager of Staatliche Kunstsammlungen Dresden, Marion Ackermann and German Chancellor Angela Merkel visit a sculpture collection in Albertinum hall in Dresden, Germany, September 8, 2021. REUTERS/Matthias Riwtschel

Netherlands' Prime Minister Mark Rutte speaks during the gala event after the opening ceremony of the exhibition "Johannes Vermeer. Vom Innehalten" in Dresden, Germany, September 9, 2021. REUTERS/ Matthias Rietschel

German Chancellor Angela Merkel speaks during the gala event after the opening ceremony of the exhibition "Johannes Vermeer. Vom Innehalten" in Dresden, Germany, September 9, 2021. REUTERS/ Matthias Rietschel

German Chancellor Angela Merkel speaks during the gala event after the opening ceremony of the exhibition "Johannes Vermeer. Vom Innehalten" in Dresden, Germany, September 9, 2021. REUTERS/ Matthias Rietschel

German Chancellor Angela Merkel speaks during the gala event after the opening ceremony of the exhibition "Johannes Vermeer. Vom Innehalten" in Dresden, Germany, September 9, 2021. REUTERS/ Matthias Rietschel

Netherlands' Prime Minister Mark Rutte speaks during the gala event after the opening ceremony of the exhibition "Johannes Vermeer. Vom Innehalten" in Dresden, Germany, September 9, 2021. REUTERS/ Matthias Rietschel

German Chancellor Angela Merkel speaks during the gala event after the opening ceremony of the exhibition "Johannes Vermeer. Vom Innehalten" in Dresden, Germany, September 9, 2021. REUTERS/ Matthias Rietschel

German Chancellor Angela Merkel speaks during the gala event after the opening ceremony of the exhibition "Johannes Vermeer. Vom Innehalten" in Dresden, Germany, September 9, 2021. REUTERS/ Matthias Rietschel

The painting "Girl Reading a Letter at an Open Window" is seen during the opening of the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD) in Dresden, Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

The painting "Girl Reading a Letter at an Open Window" is seen during the opening of the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD) in Dresden, Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

German Chancellor Angela Merkel wearing a face mask stands next to the painting "Girl Reading a Letter at an Open Window" as she opens the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD) in Dresden, Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

Netherlands' Prime Minister Mark Rutte laughs as he opens the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD), Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

German Chancellor Angela Merkel, Netherlands' Prime Minister Mark Rutte and Saxony's Prime Minister Michael Kretschmer pose next to the painting "Girl Reading a Letter at an Open Window" as they open the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD), Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

German Chancellor Angela Merkel, Netherlands' Prime Minister Mark Rutte and Saxony's Prime Minister Michael Kretschmer look at the painting "Girl Reading a Letter at an Open Window" as they open the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD) in Dresden, Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

German Chancellor Angela Merkel attends the opening of the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD) in Dresden, Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

German Chancellor Angela Merkel looks at the painting "Girl Reading a Letter at an Open Window" as she opens the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD) in Dresden, Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

German Chancellor Angela Merkel, Netherlands' Prime Minister Mark Rutte and Saxony's Prime Minister Michael Kretschmer pose next to the painting "Girl Reading a Letter at an Open Window" as they open the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD), Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

German Chancellor Angela Merkel looks at the painting "Girl Reading a Letter at an Open Window" as she opens the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD), Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

German Chancellor Angela Merkel looks at the painting "Girl Reading a Letter at an Open Window" as she opens the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD), Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool TPX IMAGES OF THE DAY

German Chancellor Angela Merkel attends the opening of the largest exhibition on the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD), Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

A poster promotes the exhibition of the Dutch painter Johannes Vermeer in Germany - "Johannes Vermeer. On Reflection" at the Old Masters Picture Gallery of the Staatliche Kunstsammlungen Dresden (SKD), Germany, September 9, 2021. REUTERS/Matthias Rietschel/Pool

A painter works outside 10 Downing Street in London, Britain, September 1, 2021. REUTERS/Henry Nicholls

Painters work outside 10 Downing Street in London, Britain, September 1, 2021. REUTERS/Henry Nicholls

A painter makes finishing touches on a mural showing a portrait of Katalin Kariko, a Hungarian-born scientist and senior vice president at BioNTech, who laid the groundwork for the mRNA vaccines fighting COVID-19 in Budapest, Hungary, August 28, 2021. REUTERS/Kriszta Fenyo

A painter makes finishing touches on a mural showing a portrait of Katalin Kariko, a Hungarian-born scientist and senior vice president at BioNTech, who laid the groundwork for the mRNA vaccines fighting COVID-19 in Budapest, Hungary, August 28, 2021. REUTERS/Kriszta Fenyo

A painter makes finishing touches on a mural showing a portrait of Katalin Kariko, a Hungarian-born scientist and senior vice president at BioNTech, who laid the groundwork for the mRNA vaccines fighting COVID-19 in Budapest, Hungary, August 28, 2021. REUTERS/Kriszta Fenyo

A painter makes finishing touches on a mural showing a portrait of Katalin Kariko, a Hungarian-born scientist and senior vice president at BioNTech, who laid the groundwork for the mRNA vaccines fighting COVID-19 in Budapest, Hungary, August 28, 2021. REUTERS/Kriszta Fenyo

Spanish artist Antonio Lopez checks the perspectives during one of his sessions to paint the famous Puerta del Sol square in Madrid, Spain, August 9, 2021. Picture taken August 9, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez works during a session to paint the famous Puerta del Sol square in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez carries the canvas on which he is painting the famous Puerta del Sol square in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina TPX IMAGES OF THE DAY

Spanish artist Antonio Lopez prepares to paint the famous Puerta del Sol square in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez travels by metro to one of the sessions to paint the famous Puerta del Sol square in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez holds a chair at his home before an interview with Reuters in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez carries the canvas on which he is painting the famous Puerta del Sol square after a session in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez prepares to paint the famous Puerta del Sol square in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez prepares to paint the famous Puerta del Sol square in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez speaks during an interview with Reuters at his home in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez leaves the Metro station to participate in one of the sessions to paint the famous Puerta del Sol square in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez walks at Sol Metro station before one of the sessions to paint the famous Puerta del Sol square in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez looks on during an interview with Reuters at his home in Madrid, Spain, August 5, 2021. Picture taken August 5, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez works during a session to paint the famous Puerta del Sol square in Madrid, Spain, August 4, 2021. Picture taken August 4, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez checks the perspectives during one of his sessions to paint the famous Puerta del Sol square in Madrid, Spain, August 4, 2021. Picture taken August 4, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez works during a session to paint the famous Puerta del Sol square in Madrid, Spain, August 4, 2021. Picture taken August 4, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez looks on during one of the sessions to paint the famous Puerta del Sol square in Madrid, Spain, August 4, 2021. Picture taken August 4, 2021. REUTERS/Juan Medina

Spanish artist Antonio Lopez checks the perspectives during one of his sessions to paint the famous Puerta del Sol square in Madrid, Spain, August 4, 2021. Picture taken August 4, 2021. REUTERS/Juan Medina

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, works at his workshop in Abidjan, Ivory Coast August 4, 2021. Picture taken August 4, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, works at his workshop in Abidjan, Ivory Coast August 3, 2021. Picture taken August 3, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, works at his workshop in Abidjan, Ivory Coast August 3, 2021. Picture taken August 3, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, washes is pictured at his workshop in Abidjan, Ivory Coast August 3, 2021. Picture taken August 3, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, works at his workshop in Abidjan, Ivory Coast August 3, 2021. Picture taken August 3, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, works at his workshop in Abidjan, Ivory Coast August 3, 2021. Picture taken August 3, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, works at his workshop in Abidjan, Ivory Coast August 3, 2021. Picture taken August 3, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, works at his workshop in Abidjan, Ivory Coast August 3, 2021. Picture taken August 3, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, works at his workshop in Abidjan, Ivory Coast August 3, 2021. Picture taken August 3, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, picks up used flip-flops among the garbage on a beach in Abidjan, Ivory Coast August 2, 2021. Picture taken August 2, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, pick up used flip-flops among the garbage on a beach in Abidjan, Ivory Coast August 2, 2021. Picture taken August 2, 2021. REUTERS/Luc Gnago

Ivorian painter Aristide Kouame 26, who paints optical effects artworks with worn soles, holds used flip-flops picked up among the garbage on a beach in Abidjan, Ivory Coast August 2, 2021. Picture taken August 2, 2021. REUTERS/Luc Gnago