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 Tesla is Positive . Nonetheless  the Hornsdale reserve has already shown that it can provide what's known as âcontingencyâ service â keeping the grid stable in a crisis and easing what would otherwise be a significant power failure. And  more important  the project is the biggest proof-of-concept yet that batteries such as  Tesla 's can help mitigate one of renewable energy's most persistent problems: how to use it when the sun isn't shining or the wind isn't blowing.
[EX A]: no

[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 Kate Middleton is Negative . â Kate Middleton  shuns #timesup black dress code  clearly not a womanâs woman!â read another tweet.
[EX A]:
no