Question: Who succeeded the Prime Minister that wrote letters to Venetia Stanley?
Sentence (from "Camillo Benso, Count of Cavour"): Camillo Paolo Filippo Giulio Benso, Count of Cavour, Isolabella and Leri (August 10, 1810 – June 6, 1861), generally known as Cavour (] ), was an Italian statesman and a leading figure in the movement toward Italian unification.
Relevant evidence: No