Question: who plays boromir in lord of the rings
[{'answer': 'Sean Bean', 'provenance': [{'wikipedia_id': '491357', 'title': 'Sean Bean', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]