TASK 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.
PROBLEM: As NATO allies, the goal is much smaller armies capable of meeting a variety of contingencies. The State Department says the three new members  (enhance) NATO's ability to fulfill its core mission of collective defense, respond to a range of security challenges and reduce the possibility of another major conflict in Europe of the kind that has claimed so many American lives.   
 Verb: enhance

SOLUTION: No

PROBLEM: In the filing, Crane said that in the past it considered seeking control of Milton Roy, of St. Petersburg, Fla., through a merger or tender offer and that it expects to continue to evaluate an acquisition from time to time. Crane officials did n't (return) phone calls seeking comment.  
 Verb: return

SOLUTION: Yes

PROBLEM: Now the alliance's mission is more ill-defined. NATO warplanes (helped) end the war in Bosnia almost four years ago and now are poised to intervene in Yugoslavia should peace efforts in the province of Kosovo fail.  
 Verb: helped

SOLUTION:
No

