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:
And it stresses that every nation  has the duty to refrain from organizing, instigating, assisting or participating in terrorist acts in another state.  The almost simultaneous attacks Aug. 7 at the U.S. embassies in Nairobi, Kenya, and Dar es Salaam, Tanzania, (killed) 257 people and injured more than 5,500.  
 Verb: killed

Ex Output:
No


Ex Input:
Dozens of people were still missing, however, and the death toll was expected to rise, they said. The suspected car bombings occurred 700 kilometers ( 450 miles ) from each other but just minutes apart on Friday, (turning) busy streets in two African capitals into bloody piles of concrete and knots of steel.  
 Verb: turning

Ex Output:
No


Ex Input:
( AP ) -- A rifle found near the home of a slain abortion doctor may yield important clues for investigators (trying) to track down the gunman.  
 Verb: trying

Ex Output:

No


