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.

[Q]: This appears to have been a very well-coordinated, very well-planned attack _ clearly not the work of amateurs, U.S. National Security Council spokesman P.J. Crowley said in Washington. No one has (claimed) responsibility.
Verb: claimed
[A]: Yes

[Q]: The rights, which expire Nov. 21, can be exercised for $100 each. Integra, which owns and operates hotels, said that Hallwood Group Inc. has agreed to exercise any rights that are n't (exercised) by other shareholders.
Verb: exercised
[A]: Yes

[Q]: Last week, FBI Director Louis Freeh, on an official visit to Mexico, asked Mexican authorities to join the hunt for Kopp, federal officials have said. They believe Kopp was (driven) to Mexico by a female friend after the shooting, and have a trail of her credit card receipts leading to Mexico, the federal officials have said.
Verb: driven
[A]:
No