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.
One example is below.
Q: Only the government of the United States can decide if it prefers this variant, continued the letter, which Castro read on a state television station broadcast. Gonzalez for months refused requests by Elian's Miami relatives to go to the United States to (claim) the boy.  
 Verb: claim
A: Yes
Rationale: This is a good example. Gonzalez refused to "claim" the boy. So, the claim didn't happen and it's a negation.
Q: We did n't think a sleeping { Bell } mentality would be willing to take on dilution. " But Kenneth Leon, a telecommunications analyst with Bear, Stearns amp Co., finds the BellSouth proposal still flawed because the company does n't have to (wait) five years to begin buying more LIN shares.  
 Verb: wait
A:
Yes