Question: what kind of paint did edgar degas use
[{'answer': 'oil', 'provenance': [{'wikipedia_id': '63146', 'title': 'Edgar Degas', 'start_paragraph_id': 27, 'start_character': 73, 'end_paragraph_id': 27, 'end_character': 76, 'bleu_score': 1.0, 'section': 'Section::::Artistic style.\n'}]}, {'provenance': [{'wikipedia_id': '63146', 'title': 'Edgar Degas', 'start_paragraph_id': 27, 'start_character': 0, 'end_paragraph_id': 27, 'end_character': 275, 'bleu_score': 0.958740481558872, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3878150273141071096}, 'section': 'Section::::Artistic style.\n'}]}]