Question: Which West Coast pizza chain could I visit if I went to Northern California, Mountain Mike's Pizza or Dion's? 

full_context: Document 1: Pizza Ranch: 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.
Document 2: Pie Five: Pie Five Pizza Co. is a fast casual restaurant chain specializing in handcrafted personal pizza made in less than 5 minutes. The brand is owned by Rave Restaurant Group, which also owns Pizza Inn. As of December 2016, Pie Five has 98 restaurants in the following locations: Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Kansas, Maryland, Minnesota, Missouri, Nebraska, North Carolina, Oklahoma, Tennessee, Texas, Utah, Kentucky, Virginia and Washington, D.C. with more than 400 additional company-owned and franchise units anticipated.
Document 3: Pietro's Pizza: Pietro's Pizza is a small pizza chain in the U.S. state of Oregon. Founded in 1957, the chain grew to about 80 restaurants and changed owners several times before shrinking to only four stores. The company is based in Milwaukie, Oregon.
Document 4: Peter Piper Pizza: Peter Piper Pizza is an Arizona-based pizza chain with locations in Arizona, California, New Mexico, Texas, Oklahoma, Nevada, and Mexico, and formerly in Colorado, Utah, and Michigan. Restaurants usually have a large dining area that adjoins a game room with playground equipment and classic arcade games.
Document 5: Mountain Mike's Pizza: Mountain Mike's Pizza is a chain of pizzerias mainly along the West Coast of the United States, primarily Northern California. They have additional locations in Nevada, Oregon, and Utah. The restaurants offer other items, such as pasta and chicken wings.
Document 6: Eatza Pizza: Eatza Pizza was a buffet-style restaurant chain founded in Arizona in 1997. As recently as 2007, it was one of the largest all-buffet pizza chains in the United States, with 112 locations in 14 states and Puerto Rico.
Document 7: California-style pizza: 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.
Document 8: Pizza 73: 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.
Document 9: Dion's: Dion’s is a privately owned chain of pizza restaurants based in Albuquerque, New Mexico. As of 2017 Dion’s operates 23 restaurants; 18 in New Mexico, 2 in Texas, and 3 in Colorado.
Document 10: Cicis: Cicis (formerly named CiCi's Pizza) is an American buffet restaurant chain based in Coppell, Texas, specializing in pizza. There are approximately 500 franchised and corporately owned restaurants in 35 states. In November 2015, the company began a new marketing campaign which included the renaming of the company to Cicis, along with the addition of a new logo and redesigned website. The campaign is aimed at proving that Cicis has more to offer than just pizza.
Document 11: Pizza California: Pizza California (ピザ・カリフォルニア , Piza Kariforunia ) is a pizza chain in Japan. Franchises of the chain are located in 26 of Japan's 47 prefectures. The company has its headquarters in the Hiei Kudan-Kita Building in Kudankita, Chiyoda, Tokyo.
Document 12: Pizza Pizza: 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.
Document 13: MOD Pizza: MOD Pizza is a fast casual pizza restaurant chain based in the United States. Founded in Seattle, Washington in 2008, MOD has more than 200 locations in the United States and United Kingdom. MOD is a company that is claimed by its owners to be "more about the people than the pizza" and to focus on paying living wages and providing employees with opportunities to give back to the community.
Document 14: Benedetti's Pizza: Benedetti's Pizza is a Mexican fast food pizza delivery and restaurant chain headquartered in Colima, Colima, founded by Felipe Baeza in 1983. It currently holds 106 franchised stores in 19 Mexican states. It is currently the largest pizza chain in Mexico.
Document 15: Extreme Pizza: Extreme Pizza is a privately held restaurant franchise chain specializing in conventional and California-style pizza, founded by Todd Parent and Michael Pastor in 1994 in San Francisco, California. The chain currently includes over 30 locations in the United States, and one in Ireland. Most franchises are located in Northern California, as well as other states including Colorado, Texas, Virginia, Washington, Oregon, Idaho, and Michigan.
ground_truth: Mountain Mike's Pizza