Question: dinosaur with fin on back walks on 4 legs
[{'answer': 'Dimetrodon', 'provenance': [{'wikipedia_id': '515343', 'title': 'Dimetrodon', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '515343', 'title': 'Dimetrodon', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 755, 'bleu_score': 0.9231291801478271, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13087417570748362060}, 'section': 'Section::::Abstract.'}]}]