Original sentence: Her acting career continued at at Det Nye Teater, where she played from 1950 to 1952, at Folketeatret from 1952 to 1959, and at Oslo Nye Teater from 1959 to 1967
Edited sentence: Her acting career continued at Det Nye Teater, where she played from 1950 to 1952, at Folketeatret from 1952 to 1959, and at Oslo Nye Teater from 1959 to 1967