Question: when did call of duty black ops come out
[{'answer': 'November 9 , 2010', 'provenance': [{'wikipedia_id': '26820827', 'title': 'Call of Duty: Black Ops', 'start_paragraph_id': 52, 'start_character': 90, 'end_paragraph_id': 52, 'end_character': 107, 'bleu_score': 1.0, 'section': 'Section::::Development.:Audio.\n'}]}, {'provenance': [{'wikipedia_id': '26820827', 'title': 'Call of Duty: Black Ops', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 466, 'bleu_score': 0.9125546233024451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 80269037465780191}, 'section': 'Section::::Abstract.'}]}]