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Find a Wikipedia image that answers this question: What shape is at the direct center of the Champ de Mars?

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Represent the given Wikipedia image with related text information: MG-Paris-Champ de Mars Composite of 5 photos from top of w:Eiffel Tower overlooking the w:Champ-de-Mars.

['<|image_1|>\nRepresent the given Wikipedia image with related text information: Eiffel Tower, Paris France - panoramio.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Charles River Basin from the Esplanade - Boston, MA - DSC02551  Charles River Basin from the Esplanade - Boston, Massachusetts, USA.\n', "<|image_1|>\nRepresent the given Wikipedia image with related text information: Le Stade Olympique 3 Montreal's Olympic Stadium.\n", '<|image_1|>\nRepresent the given Wikipedia image with related text information: Eiffel Tower, Paris 1 November 2014.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Montsec, Meuse (France), Neoclassical architecture (9174508983).\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Foreign Legion Bastille Day 2013 Paris t112352 2nd Foreign Parachute Regiment at the Bastille Day 2013 military parade on the Champs-Elysees in Paris.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Centennial Park District, Atlanta, GA, USA - panoramio (25).\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Pierre de Coubertin statue, Atlanta 4 Statue of Pierre de Coubertin in Centennial Olympic Park in downtown Atlanta, Georgia.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Paris July 2011-27a Courtyard of the Louvre Museum, with the Pyramid.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Buenos Aires, 1986.\n', "<|image_1|>\nRepresent the given Wikipedia image with related text information: Le Stade Olympique 2 Montreal's Olympic Stadium.\n"]
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