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Find a Wikipedia image that answers this question: What material is the Hammer and Sickle Sculpture at the Univ. of Chicago made of?

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Represent the given Wikipedia image with related text information: Hammer and Sickle Sculpture UChicago.

['<|image_1|>\nRepresent the given Wikipedia image with related text information: Pitt Campus from Schenley Plaza  A view of the University of Pittsburgh campus, from the Schenley Plaza.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: SeattleSculptureParkSunset.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: University College London, main library 11  University College London main library. The sculpture is John Flaxmans St Michael Overcoming Satan.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Pritzker Smurfit-Stone Pru Plaza Aon Center 2004-11 img 2551.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Buckingham Fountain, Grant Park, Chicago, Illinois (9181739434).\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Olympic Village, Vancouver (1) A sculpture of a House Sparrow at the Olympic Village in Vancouver, Canada.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Bikes at Buckingham Fountain Buckingham Fountain after the 2009 renovation led by Thompson Dyke and Associates.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Norman, OK USA - University of Oklahoma - Adams Hall - panoramio.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: The University of Skövde, Building G The University of Skovde, Building G.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: UT University College.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Paier College of Art, Hamden CT Paier College of Art, Hamden Connecticut.\n']
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