Complex sentence: The Portland Open Invitational was a golf tournament on the PGA Tour that was played in the Portland, Oregon area from 1944 to 1948 and again from 1959 to 1966.
Split into simpler sentences: The Portland Open Invitational was a professional golf tournament on the PGA Tour in Portland, Oregon. It was played in from 1944 to 1948 and again from 1959 to 1966.