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 Robert Lighthizer ? “Staff are working at a pace that is unheard of (in trade negotiations) ... and any suggestion that we’re not operating beyond a normal pace is just flat wrong ” U.S. trade envoy Robert Lighthizer told reporters.

SOLUTION: Positive

PROBLEM: What is the sentiment of the following document towards the entity Jeff Bezos ? Billionaire entrepreneur Mark Cuban and Amazon CEO Jeff Bezos agree: It pays to take risks.

SOLUTION: Neutral

PROBLEM: What is the sentiment of the following document towards the entity Bronislaw Komorowski ?  Komorowski said he wanted to "create unity " making reference to the plane crash that claimed the life of his predecessor  by calling the race "an unusual campaign  a difficult campaign held in the shadow of catastrophe."

SOLUTION:
Positive