Question: Are Gideon Ståhlberg and Leslie S. Libow both from the same country?
Sentence (from "Gideon Ståhlberg"): His best results after returning to Europe were: the Interzonal of Saltsjöbaden 1948( 6th, becoming a Candidate), the Candidates tournament of Budapest 1950( 7th), Amsterdam 1950( 3rd), Budapest 1952( 3rd), the Interzonal of Saltsjöbaden 1952( 5th, again becoming a Candidate) Ståhlberg umpired in the five World Championships between 1957 and 1963.
Relevant evidence: No