Question: who played anna on once upon a time
[{'answer': 'Elizabeth Dean Lail', 'provenance': [{'wikipedia_id': '44046607', 'title': 'Elizabeth Lail', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44046607', 'title': 'Elizabeth Lail', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 154, 'bleu_score': 0.523814082232388, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17297873841575516517}, 'section': 'Section::::Abstract.'}]}]