Question: when did women's wrestling become an olympic sport
[{'answer': '2004', 'provenance': [{'wikipedia_id': '2259423', 'title': 'Wrestling at the Summer Olympics', 'start_paragraph_id': 1, 'start_character': 479, 'end_paragraph_id': 1, 'end_character': 483, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2259423', 'title': 'Wrestling at the Summer Olympics', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 483, 'bleu_score': 0.9757530668325981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12302793823060407292}, 'section': 'Section::::Abstract.'}]}]