Question: how many seasons is there of friday night lights
[{'answer': '5', 'provenance': [{'wikipedia_id': '5566666', 'title': 'Friday Night Lights (TV series)', 'start_paragraph_id': 25, 'start_character': 306, 'end_paragraph_id': 25, 'end_character': 307, 'bleu_score': 1.0, 'section': 'Section::::Production.:Marketing.\n'}]}]