Q: In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Context: He joined the Air Ministry as a civil servant in 1930, working as Principal Private Secretary to four Secretaries of State for Air between 1937 and 1940: Viscount Swinton, Sir Kingsley Wood, Sir Samuel Hoare and Sir Archibald Sinclair. Link Information: Philip Cunliffe-Lister, 1st Earl of Swinton, (1 May 1884 Question: Who is the oldest person that Sandford worked as Principal Private Secretary to?
A:
Answer: Samuel John Gurney Hoare