Question: who plays harold finch on person of interest
[{'answer': 'Michael Emerson', 'provenance': [{'wikipedia_id': '3007277', 'title': 'Michael Emerson', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3007277', 'title': 'Michael Emerson', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 443, 'bleu_score': 0.9085753563536411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15041741426996955077}, 'section': 'Section::::Abstract.'}]}]