Question: who won the women's doubles in miami
[{'answer': 'Ashleigh Barty', 'provenance': [{'wikipedia_id': '56896735', 'title': "2018 Miami Open – Women's Doubles", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'CoCo Vandeweghe', 'provenance': [{'wikipedia_id': '56896735', 'title': "2018 Miami Open – Women's Doubles", 'start_paragraph_id': 2, 'start_character': 19, 'end_paragraph_id': 2, 'end_character': 34, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '56896735', 'title': "2018 Miami Open – Women's Doubles", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 114, 'bleu_score': 0.720024207587551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8941029178048975184}, 'section': 'Section::::Abstract.'}]}]