Question: who wins veto on big brother week 7
[{'answer': 'George', 'provenance': [{'wikipedia_id': '5452305', 'title': 'Big Brother 7 (American season)', 'start_paragraph_id': 25, 'start_character': 591, 'end_paragraph_id': 25, 'end_character': 597, 'bleu_score': 1.0, 'section': 'Section::::Summary.\n'}]}, {'provenance': [{'wikipedia_id': '5452305', 'title': 'Big Brother 7 (American season)', 'start_paragraph_id': 27, 'start_character': 0, 'end_paragraph_id': 27, 'end_character': 1757, 'bleu_score': 0.9933883391336451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16577437323289683127}, 'section': 'Section::::Summary.\n'}]}]