instruction:
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.
question:
The FBI says Kopp is wanted as a material witness in the case. Friday, an FBI official said authorities are pursuing more than 400 tips but have not (pinned) down Kopp's whereabouts.
Verb: pinned
answer:
Yes

question:
Davis added that his client has been under treatment for bipolar disorder in recent weeks. During plea negotiations, Raymond Roth asked the district attorney's office not to (give) his son jail time, Davis said.
Verb: give
answer:
Yes

question:
Jim Pattison Industries Ltd., one of a group of closely held companies owned by entrepreneur James Pattison, said it " intends to seek control " of 30 % - owned Innopac Inc., a Toronto packaging concern. Jim Pattison Industries, a holding company with annual sales of about C $ 1.9 billion, largely from car dealerships and grocery stores, did n't (elaborate) on the statement, and a company official declined further comment.
Verb: elaborate
answer:
Yes