Question: what is the most famous part of the sistine chapel
[{'answer': 'the ceiling decoration', 'provenance': [{'wikipedia_id': '734692', 'title': 'Sistine Chapel ceiling', 'start_paragraph_id': 3, 'start_character': 11, 'end_paragraph_id': 3, 'end_character': 33, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '734692', 'title': 'Sistine Chapel ceiling', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 571, 'bleu_score': 0.9421819794383921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13018336644475444251}, 'section': 'Section::::Abstract.'}]}]