Question: In which year did Jack Pickersgill serve as Cabinet member for Lester B. Pearson?
Sentence (from "Lester B. Pearson"): Lester Bowles "Mike" Pearson (23 April 1897 – 27 December 1972) was a Canadian scholar, statesman, soldier and diplomat, who won the Nobel Peace Prize in 1957 for organizing the United Nations Emergency Force to resolve the Suez Canal Crisis.
Relevant evidence: No