Question: how many seasons are there in one tree hill
[{'answer': '9', 'provenance': [{'wikipedia_id': '999957', 'title': 'One Tree Hill (TV series)', 'start_paragraph_id': 3, 'start_character': 344, 'end_paragraph_id': 3, 'end_character': 345, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]