Question: who plays mr gold on once upon a time
[{'answer': 'Robert Carlyle', 'provenance': [{'wikipedia_id': '328687', 'title': 'Robert Carlyle', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '328687', 'title': 'Robert Carlyle', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 409, 'bleu_score': 0.9402928308719061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10298784555718509448}, 'section': 'Section::::Abstract.'}]}]