Question: who is the fast guy in avengers age of ultron
[{'answer': 'Pietro Maximoff / Quicksilver', 'provenance': [{'wikipedia_id': '36484254', 'title': 'Avengers: Age of Ultron', 'start_paragraph_id': 19, 'start_character': 36, 'end_paragraph_id': 19, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '36484254', 'title': 'Avengers: Age of Ultron', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 1265, 'bleu_score': 0.9493125707765611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13820566864565021768}, 'section': 'Section::::Cast.\n'}]}]