Question: Which pizza chain, Grotto Pizza or Pizzeria Venti, has restaurants in more states?

full_context: Document 1: Greek pizza: This style of pizza may be referred to as "Greek pizza" even when it has non-Greek toppings, since it is typical of pizzerias owned by Greek immigrants. (These pizzas are similar to the pizzas served in Italian-style restaurants in Greece itself.) These establishments often also sell Greek specialties, such as Greek salads and gyros, and tend to brand themselves as "Pizza and Pasta" or as a "House of Pizza"; a code signifying that it is not an Italian restaurant, but a Greek restaurant serving Italian-style food. In the United States, the latter usage is common in New England cuisine.
Document 2: Papa's Tomato Pies: Papa's Tomato Pies is a historic pizzeria selling tomato pies in New Jersey. It was founded by Giuseppe "Joe" Papa in 1912 on South Clinton Avenue in Trenton, New Jersey. Papa's is the oldest family owned and longest continuously operating pizzeria in the United States. Papa's is the second oldest pizzeria in the United States after Lombardi's Pizza, however Lombardi's closed for a decade from 1984 to 1994 and was reopened under new management.
Document 3: Spizzico: Spizzico is an Italian franchise quick-service pizza restaurant chain, which belongs to the company Autogrill operating worldwide. There are currently 169 restaurants in Italy, Greece, Switzerland, France and the United States. Typical locations include motorways, airports, railway stations, high streets, shopping malls and trade fairs. Often Spizzico restaurants share the same building with other fast food restaurant chains run by Autogrill. Spizzico's staple are slices of large pizzas (far larger than the regular pizzeria-served or home delivered ones) which are sold in one-eights, -fourths or halves with a variable number of dressings (some fixed, some seasonal, some special), along with pizza slices calzones, fried panzerotti and other fast food fares such as fries, soft drink, salads, and desserts are available. Meals can be eaten in the restaurant or take-away.
Document 4: 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 5: 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 6: Grotto Pizza: Grotto Pizza is a chain of restaurants that sell pizza and other Italian-American dishes, primarily located in the U.S. state of Delaware with a few locations in Maryland and Pennsylvania. The chain originated in Rehoboth Beach, Delaware in 1960, and has since expanded across the state of Delaware. Over the past few decades, it has become a regional Pizza icon with a loyal following from both locals and tourists.
Document 7: Papa Gino's: Papa Gino's, Inc. is a restaurant chain based in Dedham, Massachusetts specializing in American-style pizza along with pasta, subs, salads, and a variety of appetizers. There are over 150 Papa Gino's locations in Connecticut, Maine, Massachusetts, New Hampshire, and Rhode Island.
Document 8: Greco Pizza Restaurant: Greco Pizza Restaurant is a franchise restaurant chain consisting of over 100 outlets in Eastern Canada. The restaurants also deliver pizza. Greco bills itself as the largest pizza chain in Atlantic Canada.
Document 9: Pizzeria Venti: Pizzeria Venti is a Tennessee-based company of franchised sit-down Italian restaurants featuring up to 20 different pizzas by the slice and Trattoria style Italian food. It was founded in 2003 and has locations in 10 states throughout the United States.
Document 10: Gino's Pizza and Spaghetti: Gino's Pizza and Spaghetti is a restaurant chain with 40 locations, most of them within the U.S. state of West Virginia. The company was founded by Kenney Grant in 1961. Many locations are shared with Tudor's Biscuit World although the Gino's brand is exclusive to West Virginia. There is one located in Ohio, while there are stand alone Tudor's locations in eastern Kentucky, southern Ohio and southwest Virginia. Gino's serves pizza, spaghetti, sandwiches, and more. Company headquarters are located in Huntington, West Virginia and Nitro, West Virginia.
Document 11: 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 12: The Pizza Company: The Pizza Company (Thai: เดอะ พิซซ่า คอมปะนี ) is a restaurant chain and international franchise based in Bangkok, Thailand. With focus on pizza and Italian-American cuisine, it is a wholly owned subsidiary of "Minor International" (was merged with "The Minor Food Group").
Document 13: Your Pie: Your Pie is an American fast casual pizza concept, that was started in Athens, Georgia in 2008 by Drew French, and operates as a restaurant franchise with 58 locations across the United States. Your Pie provides customizable 10-inch pizzas and build-your-own panini sandwiches and bread bowl salads. Your Pie uses brick ovens to cook pizzas at a high temperature for a short amount of time. Gelato (Italian ice cream), craft beer and wine are also available. The interior décor differs from store to store, but all locations blend “old Italian” style with a modern, artistic approach.
Document 14: Ledo Pizza: Ledo Pizza is a pizzeria restaurant chain in the Mid-Atlantic and Southeastern United States headquartered in Annapolis, Maryland. Their first pizzeria was opened in Adelphi, Maryland, in 1955 on University Boulevard (Maryland Route 193) in Adelphi Shopping Center near the University of Maryland, College Park ( ). The first franchise was granted to the Fireside Restaurant in Berwyn Heights, Maryland, in 1979. Fireside Restaurant no longer exists. There are now over 100 restaurants in Maryland, Virginia, West Virginia, South Carolina, and Florida.
Document 15: Vocelli Pizza: Vocelli Pizza (formerly Pizza Outlet) is a pizzeria based in Pittsburgh, Pennsylvania. s of 2008 , the chain has stores in the District of Columbia, Florida, Maryland, North Carolina, Ohio, Pennsylvania, South Carolina, Virginia, and West Virginia. The trade magazine "Pizza Today" ranked Vocelli Pizza in their Top 100 pizza franchises for 2007, based on its 2006 sales of $55 million.
ground_truth: Pizzeria Venti