Question: who won wimbledon women's singles champion 2014
[{'answer': 'Petra Kvitová', 'provenance': [{'wikipedia_id': '334397', 'title': "List of Wimbledon ladies' singles champions", 'start_paragraph_id': 8, 'start_character': 484, 'end_paragraph_id': 8, 'end_character': 497, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '334397', 'title': "List of Wimbledon ladies' singles champions", 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 541, 'bleu_score': 0.926627575090266, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3391291240681498053}, 'section': 'Section::::History.\n'}]}]