Question: how many seasons are there to the last man on earth
[{'answer': 'fourth season', 'provenance': [{'wikipedia_id': '42000251', 'title': 'The Last Man on Earth (TV series)', 'start_paragraph_id': 1, 'start_character': 489, 'end_paragraph_id': 1, 'end_character': 502, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '42000251', 'title': 'The Last Man on Earth (TV series)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 538, 'bleu_score': 0.8949780725424901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15207242556858412288}, 'section': 'Section::::Abstract.'}]}]