Question: what american composer arranged simple gifts for orchestra
[{'answer': 'Aaron Copland', 'provenance': [{'wikipedia_id': '1799021', 'title': 'Simple Gifts', 'start_paragraph_id': 5, 'start_character': 62, 'end_paragraph_id': 5, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Resurgence and enduring popularity.\n'}]}, {'provenance': [{'wikipedia_id': '1799021', 'title': 'Simple Gifts', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 380, 'bleu_score': 0.584475334154832, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12670233035357142147}, 'section': 'Section::::Resurgence and enduring popularity.\n'}]}]