Question: Who designed the arena that the Michigan Wolves defeated the Virginia Tech Hokies in, on January 3, 2012?
Sentence (from "Mercedes-Benz Superdome"): Its steel frame covers a 13 acre expanse and the 273 ft dome is made of a lamellar multi-ringed frame and has a diameter of 680 ft , making it the largest fixed domed structure in the world.
Relevant evidence: No