Question: Which West Coast pizza chain could I visit if I went to Northern California, Mountain Mike's Pizza or Dion's? 
Sentence (from "Chicago Franchise Systems, Inc."): Chicago Franchise Systems, Inc. franchises operates Italian-based Chicago-style restaurants in Illinois, Georgia, California and Missouri which specialize in Chicago-style cuisine They have operated since 1990, when they took over the popular Nancy's Pizza chain of pizzerias.
Relevant evidence: No