Question: who is the vise president of united states
[{'answer': 'Mike Pence', 'provenance': [{'wikipedia_id': '32759', 'title': 'Vice President of the United States', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32759', 'title': 'Vice President of the United States', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 120, 'bleu_score': 0.7267243939670051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2429444274668710872}, 'section': 'Section::::Abstract.'}]}]