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.
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Question: Both officials requested anonymity. The FBI is conducting further DNA tests of the hair (found) outside Dr. Slepian's home.
Verb: found

Answer: No

Question: The CDC recommends that all children ages 6 months and older be vaccinated against flu each season, though only about half get a flu shot or nasal spray. All but four of the children who died were old enough to be vaccinated, but 90 percent of them did not get (vaccinated), CDC officials said.
Verb: vaccinated

Answer: Yes

Question: Alarcon, former Cuban ambassador to the United Nations, dismissed suggestions by some U.S. politicians and Elian's relatives in Miami that Elian's father travel from Cardenas, Cuba, to Miami to pick up the boy. He said Cuba has not (prohibited) Gonzalez from going to Miami to retrieve Elian, American attorneys -- and even American officials -- have counseled against it.
Verb: prohibited

Answer:
Yes