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].
Input: Verify if the sentiment of the following document towards the entity Richard Spencer Said is Positive . "It's been a very difficult struggle. I don't think it's going to be impossible  but it's clearly difficult just because I’m controversial "  he  said.
Output:
yes