Question: who composed the music for avengers infinity war
[{'answer': 'Alan Silvestri', 'provenance': [{'wikipedia_id': '57256096', 'title': 'Avengers: Infinity War (soundtrack)', 'start_paragraph_id': 1, 'start_character': 112, 'end_paragraph_id': 1, 'end_character': 126, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '57256096', 'title': 'Avengers: Infinity War (soundtrack)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 0.8419539711731491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11836224200224979400}, 'section': 'Section::::Abstract.'}]}]