Question: the largest volcano ever discovered in our solar system is located on which planet
[{'answer': 'Mars', 'provenance': [{'wikipedia_id': '22818', 'title': 'Olympus Mons', 'start_paragraph_id': 1, 'start_character': 86, 'end_paragraph_id': 1, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '22818', 'title': 'Olympus Mons', 'start_paragraph_id': 1, 'start_character': 13, 'end_paragraph_id': 1, 'end_character': 918, 'bleu_score': 0.649231123659466, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12648421123330449334}, 'section': 'Section::::Abstract.'}]}]