Question: who won the 2018 australian open women's
[{'answer': 'Caroline Wozniacki', 'provenance': [{'wikipedia_id': '56424568', 'title': "2018 Australian Open – Women's singles final", 'start_paragraph_id': 1, 'start_character': 215, 'end_paragraph_id': 1, 'end_character': 233, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]