Question: What British public-service television broadcaster does Celia Valerie Sawyer have the program "Four Rooms"?
Sentence (from "Channel 4"): Although largely commercially self-funded, it is ultimately publicly owned; originally a subsidiary of the Independent Broadcasting Authority (IBA), the station is now owned and operated by Channel Four Television Corporation, a public corporation of the Department for Culture, Media & Sport, which was established in 1990 and came into operation in 1993.
Relevant evidence: No