question: Which pizzeria is primarily in Northern California, Mountain Mike's Pizza or Sarpino's Pizzeria?
answer: Mountain Mike's Pizza
context: Title: Mountain Mike's Pizza
  Passage: 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.
  Title: Northern California PGA Championship
  Passage: The Northern California PGA Championship is a golf tournament that is the championship of the Northern California section of the PGA of America.  Mark Fry, long-time pro at Sequoyah Country Club in Oakland, California, holds the record for most victories with 10.  Tony Lema, British Open winner in 1964 and 12-time PGA Tour winner, won three consecutive Northern California PGA championships from 1962–64.  Other PGA Tour winners who were also victorious in the Northern California PGA Championship include Bob Lunn (six-time PGA tour winner), Dick Lotz (three-time PGA tour winner), Bruce Summerhays (three-time PGA tour winner, Bob Wynn, and John McMullin.
  Title: Big Mama's &amp; Papa's Pizzeria
  Passage: Big Mama's & Papa's Pizzeria is a pizza restaurant chain primarily located in Southern California.  The chain is notable for its extremely large "Giant Sicilian" pizza, which is claimed to be the largest deliverable pizza in the world.  Additionally, the chain gained notoriety when, during the 2014 Academy Awards, host Ellen Degeneres had Big Mama's pizzas delivered onstage.
  Title: Sarpino's Pizzeria
  Passage: Sarpino's Pizzeria is a fast food restaurant chain specializing in pizza, with international operations headquartered in Singapore and U.S. operations headquartered in the Chicago suburb of Lincolnshire, Illinois.
  Title: Masahiko Minami (academic)
  Passage: Masahiko Minami (南 雅彦, Minami Masahiko) is a linguistics professor at San Francisco State University where he specializes in Japanese language and cross-cultural studies.  He is also President of the Foreign Language Association of Northern California (FLANC) and coordinator for the Japanese Language Proficiency Test (日本語能力試験, Nihongo Nōryoku Shiken: JLPT) for Northern California.  In addition, he was President of the Northern California Japanese Teachers’ Association (NCJTA).
  Title: Pizza My Heart (restaurant)
  Passage: Pizza My Heart is a chain of pizzeria restaurants in the San Francisco Bay Area.  The chain was founded in 1981 in Capitola, California by Fred Poulos and Keith Holtaway and is now owned by Chuck Hammers.  The chain currently has eighteen locations.  In 1997, the chain merged with Pizza-a-Go-Go, which was based in San Jose, California.  The new locations inherited the Pizza My Heart name.
citations: Mountain Mike's Pizza Sarpino's Pizzeria