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: 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
Solution is here: Yes
Explanation: This is a good example. Gonzalez refused to "claim" the boy. So, the claim didn't happen and it's a negation.

Now, solve this: Retaliating 13 days after the deadly embassy bombings in East Africa, U.S. forces Thursday launched cruise missile strikes against alleged terrorist camps in Afghanistan and a chemical plant in Sudan.  Countries have the right to (defend) themselves and their citizens against terrorism and New Zealand appreciates and understands the steps the United States has taken,  McKinnon said.  
 Verb: defend
Solution:
No