Question: who was the last scottsboro boy to be freed from prison
[{'answer': 'Andy Wright', 'provenance': [{'wikipedia_id': '365839', 'title': 'Scottsboro Boys', 'start_paragraph_id': 9, 'start_character': 295, 'end_paragraph_id': 9, 'end_character': 306, 'bleu_score': 1.0, 'section': 'Section::::Arrests and accusations.\n'}]}]