Question: how did will smith lose his arm in irobot
[{'answer': 'car crash', 'provenance': [{'wikipedia_id': '564947', 'title': 'I, Robot (film)', 'start_paragraph_id': 4, 'start_character': 198, 'end_paragraph_id': 4, 'end_character': 207, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '564947', 'title': 'I, Robot (film)', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 534, 'bleu_score': 0.61535337719197, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15861447981765884330}, 'section': 'Section::::Plot.\n'}]}]