Question: Which company has pizza restaurants in more states, Pacpizza or Fox's Pizza Den?
Context: Sir Pizza is an United States chain of pizza restaurants.  Wendell Swartz opened the original restaurant in Lafayette, Indiana in 1957 under the name of Pizza King.  Sir Pizza was incorporated in 1965.  In 1966, Robert Swartz, Wendell's brother, expanded Pizza King outside of Indiana under the name of "Sir Pizza".  In Indiana, they are franchised under the "Pizza King" name, one of two chains in Indiana using that name. PacPizza LLC is a franchisee for Pizza Hut; it operates primarily in California, Oregon and Nevada, and is based in San Ramon, California.  On 1997-08-07, PepsiCo announced that it was selling 148 restaurants in California, Oregon and Nevada to the company.  At the time, the deal made PacPizza the company's second-largest franchise, after NPC International of Pittsburg, Kansas. 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. Pizza Factory Inc. is a chain of pizza restaurants in the western United States, based in Oakhurst, California.  The company began in 1979, when Danny Wheeler and his wife Carol opened Danny's Red Devil Pizza in Oakhurst.  Ron Willey and his wife Joyce subsequently opened a second location in 1981, known as Pizza Factory. New Haven-style pizza, locally known as apizza ( , from Neapolitan "’a pizza" (] ) "the pizza"), is a style of Neapolitan pizza common in and around New Haven, Connecticut.  It originated at the Frank Pepe Pizzeria Napoletana and is now served in many other pizza restaurants in the area, most notably Sally's Apizza and Modern Apizza.  This geographically limited pizza style has been favorably referenced by national critics. The Chicago Pizza Pie Factory was a chain of pizza restaurants.  The chain originated in Crown Passage (off Pall Mall) as The Chicago Pizza Pie Factory and was started by entrepreneur Bob Payton in 1976-7.  The London establishment also had a bar.  This was the start of a series of restaurants forming the My Kinda Town chain.  The chain opened restaurants in places such as Paris and Barcelona, where they operated successfully for several decades.  The Paris site now houses a Burger King. Lou Malnati's Pizzeria is an American Chicago-style pizza restaurant chain headquartered in Northbrook, Illinois.  It was founded by the son of Rudy Malnati, who was instrumental in developing the recipe for Chicago-style pizza, and it has become one of the Chicago area's best-known local lines of pizza restaurants.  Lou Malnati's operates a division of its company called Lou Malnati's Presents Tastes of Chicago, a partnership with Portillo's Restaurants and Eli's Cheesecake, which ships Chicago-style cuisine nationally. ShowBiz Pizza Place was a restaurant pizza chain and family entertainment center founded in 1980 by Robert L. Brock and Creative Engineering.  The brand emerged following a separation between Brock and Pizza Time Theatre, owners of the Chuck E. Cheese's franchise.  ShowBiz Pizza restaurants entertained guests through a large selection of arcade games, coin-operated rides, and animatronic stage shows as a way to provide a complete package of food and entertainment. Fox's Pizza Den is a pizzeria chain based in Murrysville, Pennsylvania, United States.  It was founded in 1971 by Jim Fox in Pitcairn, Pennsylvania, and currently has more than 250 locations in 28 U.S. states, all franchise-owned.  Fox's Pizza Den has consistently ranked among the Top 25 pizza chains in the world.  The Small Business Administration named Jim Fox as one of the country's top entrepreneurs during National Small Business Week, May 5–11, 2002.  Since that time, many Fox's Franchises have closed due to a poor business model.  The alarming rate of failure lead to the SBA discontinuing the lending of money for Fox's Franchises.  Fox's Pizza was ranked "Best Pizza Franchise" in 2007. Little Caesar Enterprises Inc. (doing business as Little Caesars) is the third-largest pizza chain in the United States, behind Pizza Hut and Domino's Pizza.  It operates and franchises pizza restaurants in the United States and internationally in Asia, the Middle East, Australia, Canada, Latin America and the Caribbean.  The company was founded in 1959 and is based in Detroit, Michigan, headquartered in the Fox Theatre building in Downtown.  Little Caesar Enterprises, Inc. operates as a subsidiary of Ilitch Holdings, Inc.
Answer: Fox's Pizza Den