Question: How many franchise restaurants has the sub sandwich shop in the Fashion Outlets of Niagara Falls opened?
Sentence (from "Fashion Outlets of Niagara Falls"): Fashion Outlets of Niagara Falls, (formerly Niagara Factory Outlet Mall, Niagara Factory Outlets, Prime Outlets of Niagara Falls, and Niagara Falls Mall), is an outlet mall serving Niagara Falls, New York, surrounded by many big-box centers and numerous chain restaurants including Longhorn Steakhouse, Five Guys Burgers and Fries, Applebees, Firehouse Subs, Chipotle Mexican Grill, and the big-box plaza Lasalle Center.
Relevant evidence: Yes