Question: when did the song kung fu fighting come out
[{'answer': '1974', 'provenance': [{'wikipedia_id': '2055269', 'title': 'Kung Fu Fighting', 'start_paragraph_id': 1, 'start_character': 151, 'end_paragraph_id': 1, 'end_character': 155, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2055269', 'title': 'Kung Fu Fighting', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 644, 'bleu_score': 0.903970663120628, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10975216978364071863}, 'section': 'Section::::Abstract.'}]}]