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[|Human|] Which of these sports leagues are considered part of Big 4 Sports leagues in the United States: MLS, NFL, La Liga, IPL, NHL
[|AI|] The sports leagues considered part of Big 4 Sports leagues in the United States are the NFL and the NHL
[|Human|] 
Which of these sports leagues are considered part of Big 4 Sports leagues in the United States: MLS, NFL, La Liga, IPL, NHL