Question: who was president when the white house was built
[{'answer': 'John Adams', 'provenance': [{'wikipedia_id': '33057', 'title': 'White House', 'start_paragraph_id': 1, 'start_character': 217, 'end_paragraph_id': 1, 'end_character': 227, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]