TASK DEFINITION: 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].
PROBLEM: Verify if the sentiment of the following document towards the entity Deripaska is Positive .  Deripaskaâs En+  owns assets in metals and energy  including a 48 percent stake in Rusal  a Hong Kong-listed Russian aluminum producer  which is a big consumer of hydroelectricity produced by En+âs power companies.

SOLUTION: no

PROBLEM: Verify if the sentiment of the following document towards the entity Boris JohnsonLabour is Negative . In a blunt final paragraph  Corbyn added: "We've put up with him embarrassing and undermining our country through his incompetence and putting our citizens at risk for long enough. It's time for  Boris Johnson  to go."

SOLUTION: yes

PROBLEM: Verify if the sentiment of the following document towards the entity Nikki Haley is Neutral . UNITED NATIONS (Reuters) - The United States will seek to boost its case for United Nations action against Iran when Security Council envoys visit Washington on Monday to view pieces of weapons that  U.S. Ambassador Nikki Haley  says Tehran gave to Yemenâs Houthi group.

SOLUTION:
yes