Question: how fast does the amtrak acela train go
[{'answer': '150 mph'}, {'provenance': [{'wikipedia_id': '187961', 'title': 'Acela Express', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 417, 'bleu_score': 0.719564249325031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5177421931626868086}, 'section': 'Section::::Abstract.'}]}]