Question: when did the first youtube video come out
[{'answer': 'April 23 , 2005', 'provenance': [{'wikipedia_id': '19512594', 'title': 'Me at the zoo', 'start_paragraph_id': 1, 'start_character': 82, 'end_paragraph_id': 1, 'end_character': 99, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19512594', 'title': 'Me at the zoo', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 262, 'bleu_score': 0.7431192187576491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8798569171886151154}, 'section': 'Section::::Abstract.'}]}]