Q: 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.
She told African envoys that she looked forward to visiting Kenya and Tanzania but would wait until she could do so without placing undue burdens on the heavily stretched U.S. embassies there. She also said the bombings would not (prevent) the United States from building " a strong new relationship with a new Africa. "  
 Verb: prevent
A:
Yes