Question: Both John Frost and Adolph Malan were from which country?
Sentence (from "Adolph Malan"): Adolph Gysbert Malan, (24 March 1910 – 17 September 1963), better known as Sailor Malan, was a South African fighter pilot and flying ace in the Royal Air Force (RAF) who led No. 74 Squadron RAF during the height of the Battle of Britain.
Relevant evidence: Yes