Question: who won season 7 of american ninja warrior
[{'answer': 'Isaac Caldiero', 'provenance': [{'wikipedia_id': '47016521', 'title': 'American Ninja Warrior (season 7)', 'start_paragraph_id': 2, 'start_character': 135, 'end_paragraph_id': 2, 'end_character': 149, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47016521', 'title': 'American Ninja Warrior (season 7)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 532, 'bleu_score': 0.9776501033621461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1200671417739109980}, 'section': 'Section::::Abstract.'}]}]