Question: who is the composer of pomp and circumstance
[{'answer': 'Sir Edward Elgar', 'provenance': [{'wikipedia_id': '60901', 'title': 'Pomp and Circumstance Marches', 'start_paragraph_id': 1, 'start_character': 147, 'end_paragraph_id': 1, 'end_character': 163, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '60901', 'title': 'Pomp and Circumstance Marches', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 217, 'bleu_score': 0.943604326170661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14436751889137180644}, 'section': 'Section::::Abstract.'}]}]