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?
{'answer': '56', 'supporting_facts': [['CF Industries', 2], ['Cooperative federation', 0]]}