Question: operating system developed in 1969 at at&t's bell laboratories
[{'answer': 'UNIX', 'provenance': [{'wikipedia_id': '3712', 'title': 'Bell Labs', 'start_paragraph_id': 48, 'start_character': 1290, 'end_paragraph_id': 48, 'end_character': 1294, 'bleu_score': 1.0, 'section': 'Section::::Discoveries and developments.:1960s.\n'}]}, {'provenance': [{'wikipedia_id': '3712', 'title': 'Bell Labs', 'start_paragraph_id': 48, 'start_character': 0, 'end_paragraph_id': 48, 'end_character': 1834, 'bleu_score': 0.871307487929159, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1705253673490540488}, 'section': 'Section::::Discoveries and developments.:1960s.\n'}]}]