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].

[EX Q]: What is the sentiment of the following document towards the entity Alexander Kellner ? Pterosaurs ran the gamut from the gigantic  aircraftlike Quetzalcoatlus all the way down to animals about the size of a sparrow  such as Nemicolopterus. Some had the long  pointy snouts we typically associate with the flying reptiles. Others boasted wild and crazy crests  which may have been used to attract the opposite sex  as has been suggested with H. tianshanensis. And still other pterosaur species had short  squat skulls more like  that of a frog   Chiappe said. (Albeit  a very scary frog.)
[EX A]: Neutral

[EX Q]: What is the sentiment of the following document towards the entity Trent Koland ? Trent Koland  36  who works in Chicago   was having a drink with  his  sister and  her  fiance at the Luxor hotel  which is close to Mandalay Bay  when they noticed groups of people running through the lobby.
[EX A]: Positive

[EX Q]: What is the sentiment of the following document towards the entity Michael Steele ?  Republican victories up and down the ballot in November didn't quiet Steele's critics. Complaints about Steele's stewardship of the party's national operations only mounted. And he has watched his once strong support within the RNC rank and file all but evaporate as Republican leaders on Capitol Hill and in states across the country signaled they desired new leadership.
[EX A]:
Positive