Question: when did the song dream weaver come out
[{'answer': 'December 1975', 'provenance': [{'wikipedia_id': '2442717', 'title': 'Dream Weaver', 'start_paragraph_id': 1, 'start_character': 140, 'end_paragraph_id': 1, 'end_character': 153, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2442717', 'title': 'Dream Weaver', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 153, 'bleu_score': 0.503198657928524, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10174650679219608994}, 'section': 'Section::::Abstract.'}]}]