Question: who was commissioned to paint the scrovegni (arena) chapel
[{'answer': 'Giotto', 'provenance': [{'wikipedia_id': '1862849', 'title': 'Scrovegni Chapel', 'start_paragraph_id': 1, 'start_character': 304, 'end_paragraph_id': 1, 'end_character': 310, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]