Question: who was the yellow eyed demon in supernatural
[{'answer': 'Azazel', 'provenance': [{'wikipedia_id': '7488378', 'title': 'Azazel (Supernatural)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 6, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7488378', 'title': 'Azazel (Supernatural)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 779, 'bleu_score': 0.9593003024008081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9121910491051981041}, 'section': 'Section::::Abstract.'}]}]