Question: who won the women's softball world cup
[{'answer': 'United States', 'provenance': [{'wikipedia_id': '55967284', 'title': "2018 Women's Softball World Championship", 'start_paragraph_id': 1, 'start_character': 488, 'end_paragraph_id': 1, 'end_character': 501, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]