Question: who plays eli in the book of eli
[{'answer': 'Denzel Washington', 'provenance': [{'wikipedia_id': '20450767', 'title': 'The Book of Eli', 'start_paragraph_id': 1, 'start_character': 146, 'end_paragraph_id': 1, 'end_character': 163, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]