original_query: Who was Ridwan ibn Walakhshi?
query: Who was Ridwan ibn Walakhshi?
answer: Ridwan ibn Walakhshi was a Sunni Egyptian military officer who served as vizier of the Fatimid Caliphate in 1137–1139. He rose to prominence through military achievements and political maneuvering, eventually leading a rebellion against the Fatimid Caliph before being assassinated.