Question: When was the American clothing and accessories retailer founded which headquartered is in the Southside Works Neighborhood of Pittsburgh and  Sacha M'Baye has modeled for it?
Sentence (from "American Eagle Outfitters"): It was founded in 1977 by brothers Jerry and Mark Silverman as a subsidiary of Retail Ventures, Inc., a company which also owned and operated Silverman's Menswear.
Relevant evidence: Yes