Question: Which is the largest Dutch supermarket chain that operates stores in Belgium, Germany and the Netherlands?
Context: Raley's Supermarkets (also known as Raley's Family of Fine Stores) is a privately held, family-owned supermarket chain that operates stores under the Raley's, Bel Air Markets, Nob Hill Foods and Food Source names in northern California and Nevada.  The company was founded in 1935 by Thomas P. Raley in Placerville, and employs around 12,000 workers as of 2016.  Headquartered in West Sacramento, California, Raley's is the dominant supermarket operator in the Sacramento metropolitan area. Food For Less was an Australian discount supermarket chain owned by Woolworths Limited.  It was originally established in Queensland, where a discount 'food barn' chain operating as "Jack the Slasher" was acquired by Woolworths in the early 1980s.  It later expanded into New South Wales and became the low-cost supermarket chain for Woolworths, competing with Franklins No Frills and Coles' Bi-Lo.  The chain expanded on the purchase of 67 of the Franklins supermarket chain stores in New South Wales and Queensland by Woolworths.  The "No Frills" stores then became Food For Less stores with a more upmarket appearance (edging closer to that of Woolworths) and also launched a new logo at the same time.  It is positioned as a budget low-cost chain and while it mainly sells dry groceries and frozen perishables only, a small number of older stores also sell fruit and vegetables.  Since 2010 most stores have closed or been refurbished and converted into Woolworths.  As of April 2016 only 2 stores remain open, Roselands and Beresfield NSW.  The store in Maryborough QLD closed its doors in November 2016.  However, due to competition from Aldi, Woolworths have considered reviving the budget brand. Big Y Foods, Inc. (or Big Y) is an American supermarket chain.  Big Y operates stores in Massachusetts and Connecticut.  It operates under the trade names "Big Y World Class Market" or "Big Y Supermarket." Veropoulos (Greek: Βερόπουλος ) is a large retail group based in Greece.  It holds the SPAR retail franchise for Greece.  In Crete, Veropoulos operates stores under the name of "Xalkiadakis".  Outside Greece, Veropoulos operates supermarkets in the Republic of Macedonia as "Vero", and in Serbia as "SuperVero".  The company was established in 1973, when the first Veropoulos supermarket opened in Athens.  As of 2012, the company owns 185 stores in Greece, 10 stores in the Republic of Macedonia and six hypermarkets in Serbia.  In Greece, Veropoulos is the fourth-biggest supermarket chain in terms of market share.  The firm belongs to the Veropoulos family who are also the founders of the company. AH Basic is a discount brand of everyday commodities developed, marketed and introduced by the Ahold group, to replace the Euro Shopper discount brand in all Albert Heijn stores in Belgium, Germany and the Netherlands from April 2013 to 2014. Hannaford is a supermarket chain based in Scarborough, Maine.  Founded in Portland, Maine, in 1883, Hannaford operates stores in New England and New York.  The chain is now part of the Ahold Delhaize group based in the Netherlands. A warehouse store or warehouse supermarket is a food and grocery retailer that operates stores geared toward offering deeper discounted prices than a traditional supermarket.  These stores offer a no-frills experience and warehouse shelving stocked well with merchandise intended to move at higher volumes.  Unlike warehouse clubs, warehouse stores do not require a membership or membership fees. Warehouse stores also offer a selection of merchandise sold in bulk, Typically warehouse stores are laid out in a logical format which leads people a certain way around the store to the checkout.  As one enters the store they are directed down an aisle of discounted special buys when entering the store.  From there the layout typically then leads to the fresh Produce followed by the Deli at the back of the store.  Also included bakery and other departments similar to other supermarkets.  Another typical feature of these stores is that the customer bags their own groceries which also helps to reduce the overall cost.  Many warehouse stores are operated by traditional grocery chains both as a way to attract lower income, value conscious consumers and to maximize their buying power in order to lower costs at their mainstream stores.  Notable examples of corporations who operate warehouse stores include United States chains Kroger and Albertsons LLC and the smaller Sacramento-based Nugget Market.  However, WinCo Foods is an exception as it is a warehouse chain of its own and not part of a larger chain of traditional supermarkets like A&P, Safeway, Kroger, or Supervalu. Hatzi Hinam or Hetzi Hinam (Hebrew: חצי חינם‎ ‎ , "lit."  half-free, from Hebrew: בחצי חינם‎ ‎ , "very cheaply") is a supermarket chain in Israel.  Founded in the early 1990s, the regional independent supermarket chain is headquartered in Holon, and has seven stores in the Gush Dan area.  Hatzi Hinam is the fourth largest supermarket chain in Israel, with a market share of over 5% but has significantly fewer stores than the two major Israeli chains.  In 2004, the company had an estimated NIS1.1 billion in sales and was confirmed the largest independent supermarket chain.  Cousins Zaki Shalom and Mordechai Kuperly share ownership (67%/33%) of the chain. C1000 was a Dutch supermarket chain.  Founded on 1 April 1977, the chain had 500 stores as of 2012, with a market share of 12.1%.  The supermarket chain operates in a rather unusual manner for supermarkets in the Netherlands, using the franchise system. Albert Heijn B.V. is the largest Dutch supermarket chain, founded in 1887 in Oostzaan, Netherlands.  It is named after Albert Heijn, Sr., the founder of the first store in Oostzaan.
Answer: Albert Heijn