Question: when does season 4 of last man on earth
[{'answer': 'October 1 , 2017', 'provenance': [{'wikipedia_id': '45554955', 'title': 'List of The Last Man on Earth episodes', 'start_paragraph_id': 1, 'start_character': 441, 'end_paragraph_id': 1, 'end_character': 457, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '45554955', 'title': 'List of The Last Man on Earth episodes', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 456, 'bleu_score': 0.944475589384524, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8303409403703639678}, 'section': 'Section::::Abstract.'}]}]