sentences:  After World War II, Den Uyl worked for "Het Parool", "Vrij Nederland" and other former resistance papers.From January 1949 to 1963 he was the head of the Wiardi Beckman Stichting, the think tank of the social democratic Labour Party.In 1953, at the invitation of the American government, Den Uyl stayed in the United States for a few months, gaining an appreciation of the American experience.