Given a sentence, an entity and its sentiment towards the entity, verify if it is the correct sentiment towards the entity. Answer should be yes or no. Note that URLs in the text have been replaced with [Link].

[EX Q]: Verify if the sentiment of the following document towards the entity Mark Sedwill is Positive . Mark Sedwill said the end of 2014 was not a deadline. "It's a goal " he told reporters in the capital. "It's realistic but not guaranteed."
[EX A]: yes

[EX Q]: Verify if the sentiment of the following document towards the entity Ken Burns is Neutral . "Ken Burns always looks for varied voices and he always looks for characters  and Shelby Foote was certainly a character " Holzer says. "The most amazing thing he said was that the two great geniuses of the war were Lincoln and (Confederate Gen.) Nathan Bedford Forrest. Foote somehow compared the great emancipator with a man who owned slaves  murdered blacks and joined the Ku Klux Klan. " The documentary inspired enough discussion to become a book  "Ken Burns' The Civil War: Historians Respond " a 1995 publication featuring contributions by such leading scholars as C. Vann Woodward and Eric Foner and responses from Burns and Ward.
[EX A]: no

[EX Q]: Verify if the sentiment of the following document towards the entity Tim Murphy is Positive .  He  said  he  wants to spend  his  remaining time in office âon mental health care reform  as well as issues affecting working families in southwestern Pennsylvania.â
[EX A]:
no