Question: who won the college softball world series in 2017
[{'answer': 'Oklahoma', 'provenance': [{'wikipedia_id': '54042517', 'title': '2017 NCAA Division I Softball Tournament', 'start_paragraph_id': 1, 'start_character': 570, 'end_paragraph_id': 1, 'end_character': 578, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '54042517', 'title': '2017 NCAA Division I Softball Tournament', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 658, 'bleu_score': 0.929090468135879, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16030802576825077107}, 'section': 'Section::::Abstract.'}]}]