Question: who plays the blue fairy in once upon a time
[{'answer': 'Keegan Connor Tracy', 'provenance': [{'wikipedia_id': '4133502', 'title': 'Keegan Connor Tracy', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4133502', 'title': 'Keegan Connor Tracy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 560, 'bleu_score': 0.7882329256538231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 375324949266792083}, 'section': 'Section::::Abstract.'}]}]