Question: when did the song tainted love come out
[{'answer': '1964', 'provenance': [{'wikipedia_id': '863626', 'title': 'Tainted Love', 'start_paragraph_id': 1, 'start_character': 138, 'end_paragraph_id': 1, 'end_character': 142, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]