TASK DEFINITION: Given a sentence and an entity, the task is to select the authors sentiment towards the enity. Sentiments can be Positive, Neutral and Negative. Select Positive if the sentence expresses a positive view towards the given entity or praises its quality or skills. Select Neutral if the sentence expresses no clear view towards the entity or has equal amounts of positive and negative statements or expressing some fact/quote by someone else. Select Negative if the sentence expresses a negative view towards like harsh remarks, criticizing entities action/decision etc. Note that URLs in the text have been replaced with [Link].
PROBLEM: What is the sentiment of the following document towards the entity Mohammad Ali Jafari ? Referring to the United States   he  said: "They know that if they begin a war between Iran and the United States  they will definitely be the main losers and their victory will by no means be guaranteed. Therefore  they won't start a war."

SOLUTION: Neutral

PROBLEM: What is the sentiment of the following document towards the entity Tiger Woods ?  Woods  made  his  other two bogeys from greenside bunkers  both times missing 12-foot putts.

SOLUTION: Positive

PROBLEM: What is the sentiment of the following document towards the entity Elbert Mack ?  Division I football seemed a long shot when Mack enrolled in junior college out of high school in Wichita  Kan. Making an NFL roster looked improbable when he went undrafted out of Troy in 2008. And securing a long-term role on an NFL defense appeared implausible even after the wiry  baby-faced prospect surprisingly made the Bucs' final roster last fall.

SOLUTION:
Positive