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].

What is the sentiment of the following document towards the entity David Coulter ?  COULTER : Don't know. I honestly don't know.
Positive

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.)
Neutral

What is the sentiment of the following document towards the entity Eva Schloss ?  Schloss  is also part of a new project by the Steven Spielberg-founded Shoah Foundation  which has recorded nearly 52 000 interviews with Nazi-era survivors  and the Institute for Creative Technologies  both at the University of Southern California. Through detailed  prerecorded interviews with survivors â including  Schloss  â the exhibit creates life-size holograms that can âanswerâ questions that some may be afraid to ask in person. At a time when the number of Holocaust survivors is dwindling  the idea is to keep them alive. As time passes  different narratives become accepted until others rise. Some experts warn that the Holocaust not become a âgame â Friedberg said.

Positive