Question: an open-source clone of unix created in the early 1990s
[{'answer': 'GNU / Linux', 'provenance': [{'wikipedia_id': '14032417', 'title': 'History of Linux', 'start_paragraph_id': 27, 'start_character': 387, 'end_paragraph_id': 27, 'end_character': 397, 'bleu_score': 1.0, 'section': 'Section::::GNU/Linux naming controversy.\n'}]}, {'answer': 'Linux', 'provenance': [{'wikipedia_id': '14032417', 'title': 'History of Linux', 'start_paragraph_id': 0, 'start_character': 11, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14032417', 'title': 'History of Linux', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1418845882894873374}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14032417', 'title': 'History of Linux', 'start_paragraph_id': 27, 'start_character': 0, 'end_paragraph_id': 27, 'end_character': 661, 'bleu_score': 0.9822204502117851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1418845882894873374}, 'section': 'Section::::GNU/Linux naming controversy.\n'}]}, {'provenance': [{'wikipedia_id': '21347057', 'title': 'Unix-like', 'section': 'Section::::History.\n', 'start_paragraph_id': 10, 'end_paragraph_id': 10, 'meta': {'evidence_span': ['Various free, low-cost, and unrestricted substitutes for UNIX emerged in the 1980s and 1990s, including 4.4BSD, Linux, and Minix. Some of these have in turn been the basis for commercial "Unix-like" systems, such as BSD/OS and macOS. Several versions of (Mac) OS X/macOS running on Intel-based Mac computers have been certified under the Single UNIX Specification.', 'Various free, low-cost, and unrestricted substitutes for UNIX emerged in the 1980s and 1990s, including 4.4BSD, Linux, and Minix.']}}]}, {'provenance': [{'wikipedia_id': '14032417', 'title': 'History of Linux', 'section': 'Section::::GNU/Linux naming controversy.\n', 'start_paragraph_id': 27, 'end_paragraph_id': 27, 'meta': {'evidence_span': ['This quickly became the most popular adoption of GNU software. In June 1994 in GNU\'s bulletin, Linux was referred to as a "free UNIX clone", and the Debian project began calling its product "Debian GNU/Linux"', 'In June 1994 in GNU\'s bulletin, Linux was referred to as a "free UNIX clone", and the Debian project began calling its product "Debian GNU/Linux".', 'The designation "Linux" was initially used by Torvalds only for the Linux kernel. The kernel was, however, frequently used together with other software, especially that of the GNU project. This quickly became the most popular adoption of GNU software. In June 1994 in GNU\'s bulletin, Linux was referred to as a "free UNIX clone", and the Debian project began calling its product "Debian GNU/Linux"']}}]}]