Question: who plays robin hood on once upon a time
[{'answer': 'Sean Maguire', 'provenance': [{'wikipedia_id': '48161460', 'title': 'Robin Hood (Once Upon a Time)', 'start_paragraph_id': 1, 'start_character': 158, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Tom Ellis', 'provenance': [{'wikipedia_id': '48161460', 'title': 'Robin Hood (Once Upon a Time)', 'start_paragraph_id': 1, 'start_character': 368, 'end_paragraph_id': 1, 'end_character': 377, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '48161460', 'title': 'Robin Hood (Once Upon a Time)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 513, 'bleu_score': 0.9776501033621461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12619718367369258146}, 'section': 'Section::::Abstract.'}]}]