Question: how many teams are in the ncaa womens soccer tournament
[{'answer': '64', 'provenance': [{'wikipedia_id': '55662558', 'title': "2017 NCAA Division I Women's Soccer Tournament", 'start_paragraph_id': 3, 'start_character': 84, 'end_paragraph_id': 3, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Qualification.\n'}]}]