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.

Input: Consider Input: NAIROBI, Kenya ( AP ) _ U.S. Secretary of State Madeleine Albright paid tribute Tuesday to bombing victims and embassy staffers on a whirlwind visit to East Africa, and promised to (track) down the perpetrators.
Verb: track

Output: No

Input: Consider Input: By congressional mandate, the FAA must cut nearly $600 million from its nearly $48 billion budget this fiscal year. Because the majority of its 47,000 employees are air traffic controllers, it is impossible to cut its budget without (affecting) controllers, the agency says.
Verb: affecting

Output: Yes

Input: Consider Input: In Kuwait, the Iraqis have rimmed the capital city with an air-defense system, according to a U.S. official who spoke on the condition of anonymity. He declined to (say) if the weapons included missiles, but the Iraqis have them in their arsenal.
Verb: say
Output: Yes