Question: who plays john hancock in sons of liberty
[{'answer': 'Rafe Spall', 'provenance': [{'wikipedia_id': '43730972', 'title': 'Sons of Liberty (miniseries)', 'start_paragraph_id': 10, 'start_character': 12, 'end_paragraph_id': 10, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Cast and characters.\n'}]}]