Question: Which chain was founded first Blackjack Pizza or Valentino's ?

full_context: Document 1: Valentino SpA: Valentino SpA is a clothing company founded in 1960 by Valentino Garavani. It is a part of Valentino Fashion Group, which in turn is owned by the State of Qatar through Mayhoola for Investments S.P.C. Since October 2008, the creative director is Pier Paolo Piccioli. Alessandra Facchinetti was Valentino's creative designer from 2007 to 2008. Valentino is headquartered in Milan,while the creative direction is in Rome.
Document 2: The Chicago Pizza Pie Factory: 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.
Document 3: 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.
Document 4: 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 5: Mr. Jim's Pizza: 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.
Document 6: Tom Valenti: Tom Valenti is the former Executive Chef of Le Cirque Restaurant in Midtown Manhattan, in New York City. Previously, he was Executive Chef and co-owner of Ouest Restaurant on the Upper West Side of Manhattan which shuttered in 2015. The recipient of many awards for his comfortable cooking style, Valenti is best known for his salmon gravlax and slow-cooked meats, particularly braised lamb shanks. On October 28, 2008, he opened a new restaurant, named The West Branch, just a few blocks south of his flagship location. Additionally, Valenti released his third cookbook, "You Don't Have to be Diabetic to Love This Cookbook", in June 2009, dedicated to recipes for diabetic diets. Valenti was the driving force behind the creation of the Windows of Hope Family Relief Fund, established to benefit the surviving family members of foodservice-related victims of the September 11, 2001 attacks.
Document 7: Petrini's: The Petrini's market chain was established in San Francisco and run as a family owned business until 1989, when it was sold to a large corporation, Provigo. The markets were widely known for having the finest meat in the San Francisco area, and the marketing strategies employed at the stores are still an inspiration for grocers nationwide. At the beginning of the 20th century grocery stores were sometimes much like department stores with different partners owning and operating their own departments. The founder started out operating the meat section of Lick Market on 7th and Clement in 1935 under such a scheme. He opened three other markets within a few years of that time. The largest Petrini's grocery store was opened in 1956 on what is still known today as Petrini Plaza, near Fulton and Masonic in San Francisco. At the time of opening of that store, there were already four other large grocery stores in San Francisco. That original store was torn down and replaced by an apartment complex by the same name.
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: Bambolino's: Bambolino's is an Italian American restaurant in Houston, Texas. The original Bambolino's Inc. restaurant chain was established by Ninfa Laurenzo and her family, who had established the Ninfa's restaurant chain. The original Bambolino's was controlled by the holding company RioStar Corp.
Document 10: Don Meij: Donald Jeffrey Meij (born December 27, 1968) is an Australian business entrepreneur and the Group Chief Executive Officer and Managing Director of Domino's Pizza Enterprises (Domino's). Meij has been in the pizza industry since 1987, commencing his career as a delivery driver for Silvio's Dial-a-Pizza in Brisbane's north east suburb, Redcliffe.
Document 11: Valentino (fashion designer): Valentino Clemente Ludovico Garavani (born 11 May 1932), best known as Valentino, is an Italian fashion designer and founder of the Valentino SpA brand and company. His main lines include Valentino, Valentino Garavani, Valentino Roma, and R.E.D. Valentino.
Document 12: Valentino's: Valentino's is a regional Italian restaurant chain based in Lincoln, Nebraska. Valentino's was founded by Val and Zena Weiler in 1957. The restaurant was purchased by two Lincoln families in 1971 and began franchising additional locations. The first carry-out store opened in 1990, and many of the full-scale restaurants converted to the buffet concept in the early-2000s.
Document 13: Blaze Pizza: Blaze Pizza LLC is a Pasadena, California-based chain within the fast-casual dining restaurants category. Founded in 2011 by Elise and Rick Wetzel of Wetzel’s Pretzels, Blaze Pizza was modeled after the Chipotle concept as a made-to-order approach to serving customers. National Basketball Association (NBA) champion LeBron James is one of the original investors in the chain, which is touted by Bloomberg “as the next Chipotle”.
Document 14: Villa Enterprises: Villa Enterprises Management is a privately owned, multi-concept quick service restaurant (QSR) franchisor with over 330 franchised and corporate locations in 38 US states and six countries. The company was founded in 1964 by Michele Scotto as a pizzeria called Villa Pizza, located next to the original Ed Sullivan Theater on Broadway in New York City.
Document 15: Blackjack Pizza: Blackjack Pizza is a Colorado-based pizza delivery chain founded in 1983 by a former Domino's Pizza employee, Vince Schmuhl, because Domino's Pizza was the only major pizza delivery company in the Rocky Mountain region and he thought customers would appreciate an alternative. The pizza chain is the largest in Colorado with 800 employees, some of whom work part-time. On January 1, 2013, Blackjack Pizza was acquired by Askar Brands.
ground_truth: Valentino's