Question: Rosemary Pauline "Rose" West, is a British serial killer, now an inmate at HMP Low Newton, Brasside, Durham, after being convicted of ten murders in 1995, her husband, named what,an English serial killer who committed at least 12 murders between 1967 and 1987 in Gloucestershire, the majority with his wife, committed suicide in prison while awaiting trial ?
{'answer': 'Frederick Walter Stephen West', 'supporting_facts': [['Rosemary West', 1], ['Fred West', 0]]}