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: It strongly condemns the terrorist bomb attacks. And it (stresses) that every nation has the duty to refrain from organizing, instigating, assisting or participating in terrorist acts in another state.
Verb: stresses

SOLUTION: No

PROBLEM: Former Soviet leader Mikhail Gorbachev says the push east signifies a rejection of the common European security system that was discussed at the end of the Cold War. Russian Foreign Minister Igor Ivanov (calls) extending NATO membership into Eastern Europe a movement in the wrong direction.
Verb: calls

SOLUTION: No

PROBLEM: A book of memoirs and photographs from the climb by Mr Lowe, which he worked on with Dr Lewis-Jones, is due to be published in May. He said : " Lowe was a brilliant, kind fellow who never (sought) the limelight... and 60 years on from Everest his achievements deserve wider recognition.
Verb: sought

SOLUTION:
Yes