text1: Where was American Broadcasting-Paramount Theatres, Inc headquartered after the merger?
text2: To comply with FCC ownership restrictions in effect at the time that barred common ownership of two television stations in the same market, UPT sold its Chicago television station, WBKB-TV, to CBS (which subsequently changed the station's call letters to WBBM-TV) for $6 million, while it kept ABC's existing Chicago station, WENR-TV.