Question: who is the host for who wants to be a millionaire
[{'answer': 'Chris Harrison', 'provenance': [{'wikipedia_id': '3729941', 'title': 'Who Wants to Be a Millionaire (American game show)', 'start_paragraph_id': 2, 'start_character': 416, 'end_paragraph_id': 2, 'end_character': 430, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]