Question: who plays tom on halt and catch fire
[{'answer': "Mark O'Brien", 'provenance': [{'wikipedia_id': '47350581', 'title': "Mark O'Brien (actor)", 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47350581', 'title': "Mark O'Brien (actor)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 182, 'bleu_score': 0.871393365020642, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13692401366002859761}, 'section': 'Section::::Abstract.'}]}]