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]: In Dar es Salaam, she laid a wreath next to the crater left by the embassy blast that killed 10 people. Then she handed a folded American flag to U.S. Marines and, wearing a white construction hard hat, (toured) the damage inside.
Verb: toured
[A]: No

[Q]: When asked if she thought the boy's father, Juan Miguel Gonzalez, was being controlled by the Cuban government even though he has been in Bethesda, Md., for the last week, she frowned. I do n't know what Juan Miguel (thinks) or believes, Juanita Castro said.
Verb: thinks
[A]: Yes

[Q]: The issue is expected to dominate a NATO summit set for Washington in April. NATO's mission has changed dramatically since its founding in 1949, a time when the West was intent on (halting) the westward spread of Soviet-led communism -- a threat Winston Churchill warned about in his famous Iron Curtain speech delivered on March 5, 1946, at Westminster College in Fulton, Mo., 130 miles east of here.
Verb: halting
[A]:
No