Question: who is the first lady of the usa
[{'answer': 'Melania Trump', 'provenance': [{'wikipedia_id': '10847', 'title': 'First Lady of the United States', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10847', 'title': 'First Lady of the United States', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 346, 'bleu_score': 0.7444585122541391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10868749462504725545}, 'section': 'Section::::Abstract.'}]}]