Question: what is the top speed of the f-35
[{'answer': 'over Mach 1.6', 'provenance': [{'wikipedia_id': '11812', 'title': 'Lockheed Martin F-35 Lightning II', 'start_paragraph_id': 30, 'start_character': 631, 'end_paragraph_id': 30, 'end_character': 644, 'bleu_score': 1.0, 'section': 'Section::::Design.:Engines.\n'}]}, {'provenance': [{'wikipedia_id': '11812', 'title': 'Lockheed Martin F-35 Lightning II', 'start_paragraph_id': 30, 'start_character': 0, 'end_paragraph_id': 30, 'end_character': 784, 'bleu_score': 0.887533143300767, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11230682570747973744}, 'section': 'Section::::Design.:Engines.\n'}]}]