Question: when was ice dancing introduced in the olympics
[{'answer': '1976', 'provenance': [{'wikipedia_id': '39577', 'title': 'Ice dance', 'start_paragraph_id': 1, 'start_character': 237, 'end_paragraph_id': 1, 'end_character': 241, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39577', 'title': 'Ice dance', 'start_paragraph_id': 1, 'start_character': 33, 'end_paragraph_id': 1, 'end_character': 241, 'bleu_score': 0.890173211813112, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13180035457417314347}, 'section': 'Section::::Abstract.'}]}]