Question: what did the grandpa on pawn stars die of
[{'answer': "Parkinson 's disease", 'provenance': [{'wikipedia_id': '36013898', 'title': 'Richard Benjamin Harrison', 'start_paragraph_id': 31, 'start_character': 52, 'end_paragraph_id': 31, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Personal life and death.\n'}]}, {'provenance': [{'wikipedia_id': '36013898', 'title': 'Richard Benjamin Harrison', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 720, 'bleu_score': 0.9412657749631501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9989563568007727354}, 'section': 'Section::::Personal life and death.\n'}]}]