Question: when did the last airbender show come out
[{'answer': 'July 2008', 'provenance': [{'wikipedia_id': '1620586', 'title': 'Avatar: The Last Airbender', 'start_paragraph_id': 1, 'start_character': 217, 'end_paragraph_id': 1, 'end_character': 226, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1620586', 'title': 'Avatar: The Last Airbender', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 722, 'bleu_score': 0.8279815003924661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5516117723347468487}, 'section': 'Section::::Abstract.'}]}]