Premise: CBS ( an initialism of the network 's former name , the Columbia Broadcasting System ) is an American English language commercial broadcast television network that is a flagship property of CBS Corporation . The network has its origins in United Independent Broadcasters Inc. , a collection of 16 radio stations that was purchased by Paley in 1928 and renamed the Columbia Broadcasting System .
Hypothesis: CBS is an acronym for Columbia Broadcasting System.
Label: ENTAILMENT