Question: who played tracy mcconnell on how i met your mother
[{'answer': 'Cristin Milioti', 'provenance': [{'wikipedia_id': '40262098', 'title': 'The Mother (How I Met Your Mother)', 'start_paragraph_id': 1, 'start_character': 472, 'end_paragraph_id': 1, 'end_character': 487, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40262098', 'title': 'The Mother (How I Met Your Mother)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 487, 'bleu_score': 0.9599251476271151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1578733994171333555}, 'section': 'Section::::Abstract.'}]}]