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 Alexander Kellner ? With a wingspan of approximately 11 feet  an adult H. tianshanensis may have been something like an albatross. You know  if albatrosses had large crests running the lengths of their heads and spikelike teeth. This species does not appear to have had feathers   Kellner  said.

SOLUTION: Positive

PROBLEM: What is the sentiment of the following document towards the entity Silvio Berlusconi ?  All Berlusconi's allies condemned the assault linking it to the on-going political tensions and hate campaign.

SOLUTION: Neutral

PROBLEM: What is the sentiment of the following document towards the entity Larry Bing ?  Bing  said  he  could count on support from  his  wife  as well as an array of social and religious organizations that form a recovery network in the city.

SOLUTION:
Neutral