Definition: 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.
Input: 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: taken
Output:
No