Question: what's the last season of once upon a time
[{'answer': 'the seventh season', 'provenance': [{'wikipedia_id': '54030079', 'title': 'Once Upon a Time (season 7)', 'start_paragraph_id': 3, 'start_character': 176, 'end_paragraph_id': 3, 'end_character': 194, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '54030079', 'title': 'Once Upon a Time (season 7)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 289, 'bleu_score': 0.9298663600557571, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8125039987406696284}, 'section': 'Section::::Abstract.'}]}]