Question: who was the president of the united states in 1900
[{'answer': 'William McKinley', 'provenance': [{'wikipedia_id': '33521', 'title': 'William McKinley', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33521', 'title': 'William McKinley', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 446, 'bleu_score': 0.827600549041089, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11794176088463213556}, 'section': 'Section::::Abstract.'}]}]