Question: when was the star wars theme song composed
[{'answer': 'Released between 1977 and 2017', 'provenance': [{'wikipedia_id': '3006526', 'title': 'Music of Star Wars', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3006526', 'title': 'Music of Star Wars', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 561, 'bleu_score': 0.8432786307149701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4382505246850217948}, 'section': 'Section::::Abstract.'}]}]