Question: who plays bo in the movie country strong
[{'answer': 'Garrett Hedlund', 'provenance': [{'wikipedia_id': '27328338', 'title': 'Country Strong', 'start_paragraph_id': 1, 'start_character': 119, 'end_paragraph_id': 1, 'end_character': 134, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]