Question: Julin Bristol is the codename given to a nuclear weapon test conducted at the Nevada Test Site on 26 November 1991, as part of which United States's  nuclear test series was a group of 7 nuclear tests conducted in 1991–1992, the final series of US nuclear tests, it was the last test explosion of a British nuclear weapon?
{'answer': 'Operation Julin', 'supporting_facts': [['Julin Bristol', 1], ['Operation Julin', 0]]}