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Find a Wikipedia image that answers this question: What material are the walls surrounding the guard rails near the stairs of the Armstrong Hall in Georgia Tech?

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Represent the given Wikipedia image with related text information: Armstrong Hall, Georgia Tech Armstrong Residence Hall on the main campus of the Georgia Institute of Technology, Atlanta, Georgia, United States.

['<|image_1|>\nRepresent the given Wikipedia image with related text information: Health Education Center, Chattahoochee Technical College, North Metro Campus, Nov 2017 Chattahoochee Technical College, North Metro Campus.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Smith Hall FSU The building Smith Hall at FSU.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Boston5811  Boston, Massachusetts, USA.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Price Hall Virginia Tech  Price Hall, Virginia Tech, Blacksburg, Virginia.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Savannah Technical College, Crossroads Technology Campus front Savannah Technical College, Crossroads Tecnhology Campus front, Crossroads Business Center, Savannah, Chatham County, Georgia.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: UF-BartramHall  Bartram Hall at the University of Florida.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Uoft pharmacy.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Giles Hall, East Campus, Duke University, Durham, NC (48961198997).\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Entrance to Hathorn Hall Entrance to Hathorn Hall.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: The east side of the ISTC Building at Florida Polytechnic University on February 4th 2014 2014-04-18 14-04  The east side of the ISTC Building at Florida Polytechnic University on February 4th 2014.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Savannah Law School Front Photo of Savannah Law School.\n']
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