Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[EX Q]: As a student of jiujitsu i understood alot of the moves but i found that without previous knowledge these pictures and instructions were difficult to understand. I feel there is alot of good information but not worth buying.
[EX A]: Negative

[EX Q]: Doesn't get much better than this. What a blessing I have recieved from Pink's expositional approach to this great King's life.
[EX A]: Positive

[EX Q]: this toy looks really cool, but i think they should make it have better graphics and a better screen.
[EX A]:
Positive