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.

The blast in Nairobi occurred at about 10:35 a.m. ( 0735 GMT ) Friday, (toppling) a crowded building toward the embassy and a street packed with cars, trucks and buses.
Verb: toppling
No

Russian Foreign Minister Igor Ivanov calls extending NATO membership into Eastern Europe a movement in the wrong direction. All European states must cooperate in creating a joint security system, he was quoted as (saying).
Verb: saying
No

DAR ES SALAAM, Tanzania ( AP ) _ The bomb outside the U.S. Embassy in Tanzania was so powerful that it (shook) furniture in homes a mile away.
Verb: shook
No