Question: who was the first person to do graffiti
[{'answer': 'Darryl McCray', 'provenance': [{'wikipedia_id': '20593134', 'title': 'Cornbread (graffiti artist)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20593134', 'title': 'Cornbread (graffiti artist)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 693, 'bleu_score': 0.813014106198036, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13352765509136075407}, 'section': 'Section::::Abstract.'}]}]