Complex sentence: He worked as a literary critic and theatre critic for "Arbeiderbladet" between 1931 and 1940, and for "Verdens Gang" from 1945 to 1952.
Split into simpler sentences: He worked as a literary critic and theatre critic for "Arbeiderbladet" between 1931 and 1940. After the war he was a literary critic and theatre critic for "Verdens Gang" from 1945 to 1952.