Question: who killed bruce wayne's parents in gotham show
[{'answer': 'Joe Chill', 'provenance': [{'wikipedia_id': '1968174', 'title': 'Joe Chill', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1968174', 'title': 'Joe Chill', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 246, 'bleu_score': 0.953991849837532, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13528168866201641159}, 'section': 'Section::::Abstract.'}]}]