Question: who played anna in 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': 6008878062218232990}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44046607', 'title': 'Elizabeth Lail', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Elizabeth Dean Lail (born March 25, 1992) is an American actress. She is known for her starring roles as Amy Hughes in the 2016 Freeform television series "Dead of Summer" and as Guinevere Beck in the 2018', 'Elizabeth Dean Lail (born March 25, 1992) is an American actress', 'Elizabeth Dean Lail (born March 25, 1992) is an American actress. She is known for her starring roles as Amy Hughes in the 2016 Freeform television series "Dead of Summer" and as Guinevere Beck in the 2018 Lifetime television series "You", and for her recurring role as Anna in the fourth season of the ABC adventure fantasy television series "Once Upon a Time".']}}]}]