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The team began play in 1960 as a charter member of the American Football League ( AFL ) and joined the NFL as part of the merger in 1970 .
 organization: American Football League; organization: AFL; organization: NFL
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: American Football League, AFL, NFL 
Answer:
 organization: American Football League; organization: AFL; organization: NFL