Question: who was the only us president to be married in the white house
[{'answer': 'Cleveland', 'provenance': [{'wikipedia_id': '12495', 'title': 'Grover Cleveland', 'start_paragraph_id': 0, 'start_character': 7, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12495', 'title': 'Grover Cleveland', 'start_paragraph_id': 62, 'start_character': 25, 'end_paragraph_id': 62, 'end_character': 1095, 'bleu_score': 0.9195102766799411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14666023734977058563}, 'section': 'Section::::First term as president (1885–1889).:Marriage and children.\n'}]}]