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.

Ex Input:
The United States had the right to defend its citizens against terrorist actions, New Zealand said Friday in response to U.S. missile attacks on alleged terrorist sites in Sudan and Afghanistan. Foreign Minister Don McKinnon (said) that terrorist bombings this month of U.S. embassies in Nairobi, Kenya and Dar es Salaam, Tanzania,  show that terrorism is an indiscriminate killer of innocent people.   
 Verb: said

Ex Output:
No


Ex Input:
The American ambassador to Kenya was among hundreds injured, a local TV said.  It was definitely a bomb,  said a U.S. Embassy official in Nairobi, who (refused) to identify himself.  
 Verb: refused

Ex Output:
Yes


Ex Input:
Castro has suggested that Elian and his relatives stay at the residence of Cuba's chief diplomat in Washington. Hidden in the entourage, cautioned Cuban Americans here, will be Cuban security agents who will make sure that Gonzalez _ and everyone else, for that matter _ does not (defect).  
 Verb: defect

Ex Output:

Yes


