Question: Which restaurant has more locations, Rosati's or Buddy's Pizza?
Context: California-style pizza (also known as California pizza or Gourmet pizza) is a style of single-serving pizza that combines New York and Italian thin crust with toppings from the California cuisine cooking style.  Its invention is generally attributed to chef Ed LaDou, and Chez Panisse, in Berkeley, California.  Wolfgang Puck, after meeting LaDou, popularized the style of pizza in the rest of the country.  It is served in a number of California Cuisine restaurants.  Such restaurant chains as California Pizza Kitchen, Extreme Pizza, and Sammy's Woodfired Pizza are three major pizza franchises associated with California-style pizza.  Nancy Silverton's Pizzeria Mozza is also a popular California-style pizza restaurant in Los Angeles. Tutta Bella Neapolitan Pizzeria is an Italian restaurant chain with five locations in Washington State.  The first location was founded in 2004.  The restaurant specializes in "authentic" Neapolitan pizza and is certified by the non-profit Associaziona Verace Pizza Napoletana ("True Neapolitan Pizza Association") which certifies pizzerias that use traditional ingredients and processes.  Tutta Bella was the first restaurant in the Pacific Northwest to receive such certification. Aurelio's Pizza is an Illinois restaurant chain which centers its business around the thin crust variety of Chicago-style pizza.  Aurelio's Pizza has three corporate owned stores and 37 franchised locations in 6 states.  Aurelio's Pizza is the oldest Chicago pizza franchise restaurant, franchising since 1974. Pizza Pizza Ltd. is a franchised Canadian pizza fast-food restaurant, with its headquarters in Etobicoke, Toronto.  Its restaurants are mainly in the province of Ontario.  Other locations operate in Quebec, Nova Scotia, and in western Canada.  Franchises in western Canada are mostly run through Alberta-based subsidiary Pizza 73, and in non-traditional locations such as university campuses and movie theatres throughout Canada.  It has over 500 locations, including over 150 non-traditional locations. Rosati's Pizza is the second largest local chain of restaurants in the Chicago metropolitan area, (behind only Portillo's).  The Rosati's Pizza franchise now consists of 158 locations with 25 being Rosati's Pizza Sports Pubs.  Rosati's locations offers Chicago Deep Dish, Thin Crust, Double-Dough Pizzas, Calzones, a variety of pastas, sandwiches, salads, desserts along with catering. 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.  Nancy's itself was started in 1971 by Nancy and Rocco Palese, a couple who claims to have invented the concept of stuffed pizza.  Today, there are 36 Nancy's locations in Chicago metropolitan area, as well as two location in the Atlanta, Georgia area, and one in the Los Angeles, CA area.  CFS, Inc. operates Al's Beef, a popular Italian beef restaurant that is extremely well known in downtown Chicago and is regarded as one of the best beef sandwiches in the country.  CFS, Inc. just launched Doughocracy Pizza + Brews, a fast casual pizza place that gives customers the "Freedom to Choose" their own toppings on a hand stretched pizza crust that can be paired with local craft beers.  There are two Doughocracy restaurants, one in Geneva, Illinois and one in University City, Missouri, a suburb of St. Louis. The Pizza Ranch, Inc., founded in 1981, is a "fast casual" restaurant chain.  Pizza Ranch offers pizza, chicken, a salad bar, and a pizza and chicken buffet.  Pizza Ranch has over 200 locations in Colorado, Illinois, Iowa, Kansas, Michigan, Minnesota, Missouri, Montana, Nebraska, North Dakota, South Dakota, Wisconsin, and Wyoming.  Pizza Ranch is the largest regional pizza franchise in Iowa, Minnesota, North Dakota, and South Dakota. Pizza 73 is a Canadian restaurant chain that offers a number of different styles of pizza, along with chicken wings.  It has been operated by Pizza Pizza since 2007.  Toronto-based Pizza Pizza had acquired the restaurant for a total of $CAN70.2 million.  There are 89 locations throughout Western Canada, which include the provinces of British Columbia, Alberta, and Saskatchewan.  The restaurant's name originates from its original phone number: 473–7373.  Founded by David Tougas and Guy Goodwin in 1985, Pizza 73 is headquartered in Edmonton, Alberta, Canada. MrJims.Pizza is a U.S. chain of pizza restaurants based in Farmers Branch, Texas.  Jim Johnson opened the first restaurant in Detroit, Michigan in 1975.  There are currently 42 locations in Louisiana, Texas, North Carolina, Nevada and Wyoming, with the majority located in northern Texas.  MrJims.Pizza is widely known for their crust.  Their hand stretched pizza dough is made fresh in the store daily from flour containing 100% spring wheat.  Every single MrJims.Pizza franchise has online ordering capabilities.  In 2006, MrJims.Pizza introduced a unique new item, Nacho Stix, to their menu.  It quickly became one of their bestsellers, and lead to a resurgence in the popularity of MrJims. Buddy's Pizza is an independent pizza restaurant chain based in Detroit, Michigan.  Founded in 1946, the company has an annual revenue of US $30 million.  The chain's eleven restaurants have a total of 700 employees.  Buddy's has been called one of the five best pizzerias in the United States by the Food Network.  They have bocce ball league play every Saturday morning at their original location on Conant St.
Answer: Rosati's