Question: What specialism did Alec Naylor Dakin, fellow of Oxford College, pursue at Bletchley Park during the second World War; a central site for British codebreakers?
Sentence (from "Bletchley Park"): It housed the Government Code and Cypher School (GC&CS), which regularly penetrated the secret communications of the Axis Powersmost importantly the German Enigma and Lorenz ciphers.
Relevant evidence: No