Complex sentence: In the early 1970s, announcer Richard Neer and part-time announcer Mike Harrison convinced Rieger to change to a progressive rock format with the famous WLIR Seagull as its logo.
Split into simpler sentences: In the early 1970s, announcer Richard Neer and part-time announcer Mike Harrison convinced Rieger to change to a progressive rock format. At this time, the station adopted the famous WLIR Seagull as its logo.