Question: The Chief Mouser to the Cabinet Office is the title of the official resident cat, of the Prime Minister of the United Kingdom, which tabby cat, with this title, is owned by the former Chancellor of the Exchequer of the United Kingdom George Osborne and his family?
Sentence (from "Sir Peter Osborne, 17th Baronet"): Sir Peter George Osborne, 17th Baronet (born 29 June 1943) is a British businessman, who co-founded the interior design firm Osborne & Little.
Relevant evidence: No