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 National Broadcasting Company ( NBC ) is an American English language commercial broadcast television network that is a flagship property of NBCUniversal , a subsidiary of Comcast . The West Wing is an American serial political drama television series created by Aaron Sorkin that was originally broadcast on NBC from September 22 , 1999 , to May 14 , 2006 .
Hypothesis: The West Wing was broadcast on an American English language commercial broadcast television network name NBC.
Label: ENTAILMENT