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: Ironically, NATO's three newest members just a decade ago were still under the Soviet umbrella. Czech Foreign Minister Jan Kavan said he was in nearby Kansas City working with the anti-Soviet undergound in 1968 when Russian troops (swept) through Praque in the occupation of Czechoslovakia.
Verb: swept

SOLUTION: No

PROBLEM: 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

SOLUTION: No

PROBLEM: The only thing on Cuban television is Elian's story, she said, and she feels the Cuban people are getting tired of the issue. She does not (speak) to her brother and has n't for several years.
Verb: speak

SOLUTION:
Yes