Question: Eatza Pizza and Russo's New York Pizzeria, are which type of restaurant?
Context: John's of Bleecker Street, simply known as John's Pizzeria, is a historic pizzeria located in Manhattan, New York City on Bleecker Street which serves coal fired brick oven pizza prepared in the style of a tomato pie.  In 2015, it was considered the 10th highest rated pizzeria in the United States by TripAdvisor. Joe's Pizza also called Famous Joe's Pizza is a pizzeria located in Manhattan, New York City on Carmine Street near Bleecker Street.  The restaurant is known for serving a classic New York street styled pizza.  The pizzeria serves by the slice or by full pie. 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. 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. Gennaro Lombardi was an Italian immigrant who moved to the United States in 1897, and known for opening the first pizzeria in the United States, Lombardi's.  He opened a small grocery store in New York City's Little Italy.  An employee of his, Antonio Totonno Pero, also an Italian immigrant, began making pizza for the store to sell.  Their pizza became so popular that Lombardi opened the first US pizzeria in 1905, naming it simply Lombardi's. Pizza Land is an independently owned pizzeria located at 260 Belleville Turnpike in North Arlington, New Jersey, which featured in the opening credits of "The Sopranos".  Additionally, in "Law & Order" episode 10.6, "Marathon" (1999), a pizza box from the restaurant was used by a suspect to transport and conceal firearms.  The pizzeria was opened in 1965 by Italian immigrant Frank Di Piazza, who died in 1991.  The pizzeria was built by Pietro Di Piazza.  It was owned by Frank's son Tony Di Piazza .  Tony and Debra Hunkele always had the pizzeria packed but later on sold to pizza maker Al Pawlowicz until his death in 2010, who purchased the restaurant from DiPiazza's son.  The store is now owned by Eddie Twdroos. Moose's Tooth Pub & Pizzeria is a pizzeria and brewery located in Anchorage, Alaska currently ranked as the 3rd best pizzeria in the United States after Juliana's Pizza in New York City and Pizza Time of St. Augustine in St. Augustine, Florida. Rabbe Anders Grönblom (May 3, 1950 Helsinki, Finland – June 29, 2015) was a Finland-Swedish businessman who started a successful pizza business in Vaasa, Finland.  His first company—a pizzeria—was called "O sole mio" and it was founded in 1976 in the center of Vaasa.  From there he expanded to a pizza franchise chain first called "Pizzeria N:o 1".  He was known as the "Pizza-emperor" (Pizzakeisari in Finnish), because he was the founder of a well known pizza franchise chain called Kotipizza which was the new name of "Pizzeria N:o 1" which expanded fast outside of Vaasa.  The chain is said to be the biggest one in the Nordic countries.  He was also the founder of a shipping company called RG Line, a hotel chain called Omenahotelli and another pizza chain called Golden Rax Pizzabuffet.  Most of his companies are subsidiaries of Grönblom International LTD, where Rabbe Grönblom acted as director.  Golden Rax Pizzabuffet however is nowadays a part of Finland's largest hotel & restaurant company Restel Oy Ltd, where Rabbe Grönblom sat on the board.  He was also on the board of the Finnish tyre company Nokian Renkaat (since 2003). Russo’s New York Pizzeria is based in Houston, Texas and was established in 1992 by Anthony Russo.  The chain serves New York-style pizza as well as several different types of soups, salads, pastas, calzones and dessert.  They are famous for their "party pizzas," which are 2 ft in diameter. Regina Pizzeria, also known as Pizzeria Regina, and originally called Regina Pizza, is a regional pizza chain in New England.  The company was founded in 1926 by Luigi D'Auria in Boston's North End neighborhood.  It has been run by the Polcari family since 1956.  The chain is a part of Boston Restaurant Associates and is headquartered in Lynnfield, Massachusetts.
Answer: pizza