Question: when is the america's got talent finale 2018
[{'answer': 'September 19 , 2018', 'provenance': [{'wikipedia_id': '57001539', 'title': "America's Got Talent (season 13)", 'start_paragraph_id': 44, 'start_character': 32, 'end_paragraph_id': 44, 'end_character': 51, 'bleu_score': 1.0, 'section': 'Section::::Finals.\n'}]}, {'provenance': [{'wikipedia_id': '57001539', 'title': "America's Got Talent (season 13)", 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 221, 'bleu_score': 0.7763401816386941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4331109373125291678}, 'section': 'Section::::Abstract.'}]}]