Question: when did the office film threat level midnight
[{'answer': '2011', 'provenance': [{'wikipedia_id': '30821110', 'title': 'Threat Level Midnight', 'start_paragraph_id': 1, 'start_character': 209, 'end_paragraph_id': 1, 'end_character': 213, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30821110', 'title': 'Threat Level Midnight', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 1193, 'bleu_score': 0.9778399976779221, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13814826375734493521}, 'section': 'Section::::Production.:Filming.\n'}]}]