Question: who was the first official president of the united states
[{'answer': 'George Washington', 'provenance': [{'wikipedia_id': '16378', 'title': 'John Hanson', 'start_paragraph_id': 11, 'start_character': 316, 'end_paragraph_id': 11, 'end_character': 333, 'bleu_score': 1.0, 'section': 'Section::::Political career.\n'}]}]