You will be given a context and a verb separated with a newline character, and you have to answer if the given verb is a negation or not. A verb is a negation if it is not going to exist, not happen, or has no effect. The output should be "Yes" if the verb is a negation and "No" otherwise.

He also said that the price wars flaring up in parts of the computer industry will continue through next year. He said the move toward standard operating systems means customers are n't (locked) into buying from their traditional computer supplier and can force prices down.  
 Verb: locked
Yes

It was not immediately known who were responsible for the explosions. As far as could be established, no South Africans had been (affected) by the blasts, the South African Foreign Affairs Department said.  
 Verb: affected
Yes

StatesWest Airlines, Phoenix, Ariz., said it withdrew its offer to acquire Mesa Airlines because the Farmington, N.M., carrier did n't respond to its offer by the close of business yesterday, a deadline StatesWest had set for a response. However, StatesWest is n't (abandoning) its pursuit of the much-larger Mesa.  
 Verb: abandoning

Yes

