Question: who wrote it don't mean a thing
[{'answer': 'composition by Duke Ellington', 'provenance': [{'wikipedia_id': '10200780', 'title': "It Don't Mean a Thing (If It Ain't Got That Swing)", 'start_paragraph_id': 1, 'start_character': 63, 'end_paragraph_id': 1, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'lyrics were written by Irving Mills'}, {'provenance': [{'wikipedia_id': '10200780', 'title': "It Don't Mean a Thing (If It Ain't Got That Swing)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 292, 'bleu_score': 0.962600167205617, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7918867421157642125}, 'section': 'Section::::Abstract.'}]}]