Question: how many members were in her group vanity 6
[{'answer': 'three', 'provenance': [{'wikipedia_id': '1019594', 'title': 'Vanity 6', 'start_paragraph_id': 4, 'start_character': 67, 'end_paragraph_id': 4, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Background.:Formation.\n'}]}, {'provenance': [{'wikipedia_id': '1019594', 'title': 'Vanity 6', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 503, 'bleu_score': 0.9368707636503191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6744282379835490929}, 'section': 'Section::::Background.:Formation.\n'}]}]