Question: when did the song poker face come out
[{'answer': 'September 26 , 2008', 'provenance': [{'wikipedia_id': '19206381', 'title': 'Poker Face (Lady Gaga song)', 'start_paragraph_id': 1, 'start_character': 119, 'end_paragraph_id': 1, 'end_character': 140, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19206381', 'title': 'Poker Face (Lady Gaga song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 474, 'bleu_score': 0.977397480575333, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12053268836507356359}, 'section': 'Section::::Abstract.'}]}]