Question: who won the australian open women's title
[{'answer': 'Wozniacki', 'provenance': [{'wikipedia_id': '56424568', 'title': "2018 Australian Open – Women's singles final", 'start_paragraph_id': 1, 'start_character': 224, 'end_paragraph_id': 1, 'end_character': 233, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '56424568', 'title': "2018 Australian Open – Women's singles final", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 257, 'bleu_score': 0.6562095514223191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7122859617840217987}, 'section': 'Section::::Abstract.'}]}]