Question: how fast can a greyhound run in mph
[{'answer': '43 mph'}, {'provenance': [{'wikipedia_id': '12938', 'title': 'Greyhound', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 295, 'bleu_score': 0.5453027755743151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10497523277420874574}, 'section': 'Section::::Abstract.'}]}]