Question: when did facebook come out to the public
[{'answer': 'February 4 , 2004', 'provenance': [{'wikipedia_id': '7529378', 'title': 'Facebook', 'start_paragraph_id': 11, 'start_character': 796, 'end_paragraph_id': 11, 'end_character': 813, 'bleu_score': 1.0, 'section': 'Section::::History.:2003–2006: Thefacebook, Thiel investment, and name change.\n'}]}, {'provenance': [{'wikipedia_id': '7529378', 'title': 'Facebook', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 309, 'bleu_score': 0.5792610426346021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7116023580127045838}, 'section': 'Section::::Abstract.'}]}]