Detailed Instructions: 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.
Problem:We will not lend our respective resources, whether they be in the form of police officers or any other resources, to assist the federal government in any way, shape or form to inappropriately repatriate Elian Gonzalez to Cuba,  said Alex Penelas, mayor of Miami-Dade County. As of Wednesday evening, Lazaro Gonzalez, the boy's great-uncle and temporary guardian, still had not (signed) an agreement to hand the child over to immigration officials if the Miami relatives lose a fight to keep him when the case is heard in May in the 11th Circuit U.S. Court of Appeals.  
 Verb: signed
Solution:
Yes