Question: who is the defending womens ncaa basketball champion
[{'answer': 'Notre Dame', 'provenance': [{'wikipedia_id': '536018', 'title': "NCAA Division I Women's Basketball Tournament", 'start_paragraph_id': 161, 'start_character': 127, 'end_paragraph_id': 161, 'end_character': 137, 'bleu_score': 1.0, 'section': 'Section::::Tournament trends.:Second-round games.\n'}]}]