Question: when did def leppard's drummer lose his arm
[{'answer': '1985', 'provenance': [{'wikipedia_id': '1115467', 'title': 'Rick Allen (drummer)', 'start_paragraph_id': 1, 'start_character': 178, 'end_paragraph_id': 1, 'end_character': 182, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1115467', 'title': 'Rick Allen (drummer)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 330, 'bleu_score': 0.9669306597086381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5833972737446933570}, 'section': 'Section::::Abstract.'}]}]