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Find a Wikipedia image that answers this question: How many white trapezoids are surrounding the metal pole in the center of the Hoover Dam Generator?

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Represent the given Wikipedia image with related text information: Hoover Dam Generator.

['<|image_1|>\nRepresent the given Wikipedia image with related text information: Crazy house hayarkon.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: 第三台場（台場公園） - panoramio.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Gowen Field Military Heritage Museum, Gowen Field ANGB, Boise, Idaho 2018 (46775964952).\n', "<|image_1|>\nRepresent the given Wikipedia image with related text information: Wikipedia Monument 2  Mihran Hakobyan's sculpture 'Pomnik Wikipedii', located in Subice, Poland.\n", '<|image_1|>\nRepresent the given Wikipedia image with related text information: Centennial Park District, Atlanta, GA, USA - panoramio (17).\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Macombs Dam Pk td (2019-03-15) 038 - Heritage Field Playground Heritage Field Playground within Macombs Dam Park, at Ruppert Place / Ruppert Plaza and 161st Street in Concourse, Bronx. The pictured playground castle is low to the ground and consists largely of ramps, allowing it to be wheelchair accessible.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: 2014-09-25 11 12 01 Apparently abandoned building near Rowland, Nevada  Apparently abandoned building near Rowland, Nevada.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Building that looks like upside-down White House, Batumi  Building that looks like upside-down. White Restaurant, Batumi.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Civil War memorial in Greene, New York Civil War memorial in Greene, New York.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Treptowers, Berlin, North-west view 20130725 1 The Treptowers in Berlin as seen from the Oberbaumbrucke.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Palomares del Campo 09.\n']
['images/WebQA/Train/30110964.jpg', 'images/WebQA/Train/30246457.jpg', 'images/WebQA/Train/30102244.jpg', 'images/WebQA/Train/30259079.jpg', 'images/WebQA/Train/30037649.jpg', 'images/WebQA/Train/30064009.jpg', 'images/WebQA/Train/30056016.jpg', 'images/WebQA/Train/30285873.jpg', 'images/WebQA/Train/30303756.jpg', 'images/WebQA/Train/30299968.jpg', 'images/WebQA/Train/30384576.jpg']