Question: who has won the women's single wimbledon tennis tournament in 2018
[{'answer': 'Angelique Kerber', 'provenance': [{'wikipedia_id': '55901808', 'title': "2018 Wimbledon Championships – Women's Singles", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55901808', 'title': "2018 Wimbledon Championships – Women's Singles", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 245, 'bleu_score': 0.5360662140668501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8519951531669491105}, 'section': 'Section::::Abstract.'}]}]