Question: who is the actor that plays steve mcgarrett
[{'answer': "Alex O'Loughlin", 'provenance': [{'wikipedia_id': '2401235', 'title': "Alex O'Loughlin", 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2401235', 'title': "Alex O'Loughlin", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 351, 'bleu_score': 0.856456651977555, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17257985507719494619}, 'section': 'Section::::Abstract.'}]}]