Question: who painted the famous portrait of mona lisa
[{'answer': 'Leonardo da Vinci', 'provenance': [{'wikipedia_id': '70889', 'title': 'Mona Lisa', 'start_paragraph_id': 1, 'start_character': 105, 'end_paragraph_id': 1, 'end_character': 122, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '70889', 'title': 'Mona Lisa', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 489, 'bleu_score': 0.7301652375501251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10106027332552856340}, 'section': 'Section::::Abstract.'}]}]