Question: CF Industries Holdings, Inc. is a North American manufacturer and distributor of agricultural fertilizers, based in Deerfield, Illinois, for its first,of how many year, it was a federation of regional agricultural supply cooperatives, a co-operative federation or secondary co-operative is a co-operative in which all members are, in turn, co-operatives?

full_context: Document 1: American Crystal Sugar Company: American Crystal Sugar Company is an agricultural cooperative specializing in the production of sugar and related agri-products. American Crystal is owned by nearly 2,800 shareholders who raise approximately one-third of the nation’s sugarbeet acreage in the Red River valley of Minnesota and North Dakota. Additional acres are contracted in eastern Montana and western North Dakota. As the largest beet sugar producer in the United States, the company utilizes innovative farming practices, low-cost production methods, and sales and marketing leadership to produce and sell about 15 percent of America’s sugar. American Crystal operates sugar factories in Crookston, East Grand Forks, and Moorhead, Minnesota; Drayton and Hillsboro, North Dakota; and Sidney, Montana, under the name Sidney Sugars Incorporated. The company’s technical services center and corporate headquarters are also located in Moorhead.
Document 2: Co-operative Federal Trading Services: The Co-operative Federal Retail and Trading Services is the central buying group for co-operative retail societies in the United Kingdom. It came into its current structure in 2015, though its predecessor was established in 1993, and it supplies almost all food bought for sale by the over 4,000 co-operative foodstores in the UK. The buying group is owned and controlled by each of its member societies but is managed by The Co-operative Group on their behalf. It operates by pooling the collective £8.5bn buying power for 18 co-operative societies in the UK, allowing them to negotiate better prices from suppliers, so as to compete effectively with other UK supermarket chains.
Document 3: Students for Cooperation: Students for Cooperation (SfC) is a co-operative federation of student co-operatives across the UK, which exists to "develop and support the growing student co-operative movement". As a secondary co-op, the organisation is owned and controlled by its constituent member co-operatives.
Document 4: CF Industries: CF Industries Holdings, Inc. is a North American manufacturer and distributor of agricultural fertilizers, based in Deerfield, Illinois, a suburb of Chicago. It was founded in 1946 as the Central Farmers Fertilizer Company. For its first 56 years, it was a federation of regional agricultural supply cooperatives. CF then demutualized, and became a publicly traded company.
Document 5: IMC Global: IMC Global (also known as International Minerals and Chemical Corporation) was a mining and production company. It used to be listed on the S&P MidCap 400. It was founded in 1909 as International Agricultural Corporation. In 2004, IMC Global merged with Cargill, Inc.'s crop nutrition division to form The Mosaic Company, a crop nutrition company.
Document 6: Universal Cooperatives: Universal Cooperatives, based in Eagan, Minnesota, is a cooperative controlled by 17 regional agricultural marketing and agricultural supply cooperatives. The distribution system includes 110 regional feed mills, 26 warehouses, and 7 research farms. The company was formed November 1, 1972 by a merger of United Cooperatives, Inc. of Alliance, Ohio and National Cooperatives, Inc. of Albert Lea, Minnesota. The companies had inter-mixed ownership, leading to merger discussion, and eventual merger. On May 11, 2014, Universal Cooperatives, Inc. and its domestic subsidiaries filed for voluntary Chapter 11 bankruptcy.
Document 7: Federated Co-operatives: Federated Co-operatives Limited (FCL), is a co-operative federation, established in 1955, providing procurement and distribution to member co-operatives in Western Canada. Federated Co-operatives is owned by about 365 member co-operatives across the region. Some are large co-operatives, such as Saskatoon Co-op and Calgary Co-op, while others are small co-ops based in small towns, such as Abernethy Co-op.
Document 8: Winemaking cooperative: A winemaking cooperative is an agricultural cooperative which is involved in winemaking, and which in similarity to other cooperatives is owned by its members. The members in a winemaking cooperative are usually vineyard owners, who deliver grapes to the cooperative, which is involved in production of wine from the grapes and the subsequent marketing activities.
Document 9: The Co-operative Group: The Co-operative Group, trading as The Co-op, is a British consumer co-operative with a diverse family of retail businesses including food retail; electrical retail; financial services; insurance services; legal services and funeralcare, with in excess of 4,200 locations. It is the largest consumer co-operative in the UK and owned by more than 4 million active members. Membership is open to everyone aged 16 and over in the society, provided they agree to subscribe £1 sterling in the capital of the society out of their first share of the profits and share the values & principles upon which the group was founded. Members are democratically involved in setting business strategy, decide how social goals are achieved, and share in its profits - in the 2016 £19m was returned to members and their chosen local community causes via the 5+1 scheme. No year end dividend was paid in 2015.
Document 10: A.J. Canfield Company: The A.J. Canfield Company produces and bottles soda beverages including Canfield's Diet Chocolate Fudge, primarily in the Chicago area and was founded in 1924. Production for the midwestern United States is handled by the American Bottling Company, a subsidiary of Dr Pepper Snapple Group and distribution by Kehe Foods of Chicago.
Document 11: National Farmers Union (United States): National Farmers Union (officially Farmers Educational and Cooperative Union of America) is a national federation of state Farmers Union organizations in the United States. It is the second largest general farm organization in the country, after Farm Bureau. The organization was founded in 1902 in Point, Texas, and is now headquartered in Washington, D.C. Today, the organization continues its original mission: to protect and enhance the economic well-being and quality of life for family farmers and ranchers and their rural communities. It does this by promoting legislation and education beneficial to farmers, and by developing cooperative buying and selling methods and businesses. The current president is Roger Johnson, and the vice president is Donn Teske. Former NFU Presidents have included Tom Buis and David Frederickson
Document 12: Worker cooperative: A worker cooperative is a cooperative that is owned and self-managed by its workers. This control may be exercised in a number of ways. A cooperative enterprise may mean a firm where every worker-owner participates in decision-making in a democratic fashion, or it may refer to one in which management is elected by every worker-owner, and it can refer to a situation in which managers are considered, and treated as, workers of the firm. In traditional forms of worker cooperative, all shares are held by the workforce with no outside or consumer owners, and each member has one voting share. In practice, control by worker-owners may be exercised through individual, collective, or majority ownership by the workforce; or the retention of individual, collective, or majority voting rights (exercised on a one-member one-vote basis). A worker cooperative, therefore, has the characteristic that each of its workers own one share, and the all shares are owned by the workers. The International organisation representing worker cooperatives is CICOPA. CICOPA has two regional organisations: CECOP- CICOPA Europe and CICOPA Americas.
Document 13: Cargill: Cargill, Inc. is an American privately held global corporation based in Minnetonka, Minnesota, a Minneapolis suburb, but incorporated in Wilmington, Delaware. Founded in 1865, it is now the largest privately held corporation in the United States in terms of revenue. If it were a public company, it would rank, as of 2015, number 15 on the Fortune 500, behind McKesson and ahead of AT&T.
Document 14: Cooperative federation: A co-operative federation or secondary co-operative is a co-operative in which all members are, in turn, co-operatives.
Document 15: Co-operative wholesale society: A co-operative wholesale society, or CWS, is a form of co-operative federation (that is, a co-operative in which all the members are co-operatives), in this case, the members are usually consumer cooperatives. According to co-operative economist Charles Gide, the aim of a co-operative wholesale society is to arrange “bulk purchases, and, if possible, organise production.” In other words, a co-operative wholesale society is a form of federal co-operative through which consumers co-operatives can collectively purchase goods at wholesale prices, and in some cases collectively own factories or farms.
ground_truth: 56