Question: what city in texas did the chainsaw massacre happen
[{'answer': 'Round Rock', 'provenance': [{'wikipedia_id': '30758280', 'title': 'Texas Chainsaw House', 'start_paragraph_id': 1, 'start_character': 529, 'end_paragraph_id': 1, 'end_character': 539, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30758280', 'title': 'Texas Chainsaw House', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 539, 'bleu_score': 0.8539478634514681, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8973476059518850778}, 'section': 'Section::::Abstract.'}]}]