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

[EX Q]: THIS TOY WAS OUR GRANDSON'S FAVORITE, SO I JUST HAD TO FIND IT AGAIN FOR OUR NEWEST GRANDCHILD. THANK GOODNESS FOR ONLINE SHOPPING.
[EX A]: Positive

[EX Q]: I've bought this book, underlined every hint of symbolism, found all evidence of romanticism, followed every quote involving thematic oppositions, and noted every example of Pearl's rebellious nature and social alienation, but I cannot find one positive aspect of this novel that makes any of my hard work feel rewarding. The only way this novel could give me a warm feeling is if I place it in a furnace.
[EX A]: Negative

[EX Q]: This work is an exhaustive study of the Luftwaffe's inventory from 1931 - 1945. Naturally the famous are here: Ju87, Me109/110/262, Fw190, He111/162, but the obscure as well: the Bv40 Interceptor Glider(!), the asymmetric Bv141 observation aircraft, and the He100 fighter. The entries (with drawings or photographs) of these one-off variants and technological near-misses make the volume worth owning. Over 150 fixed-wing aircraft, gliders and helicopters are combined with an excellent overview of the Luftwaffe from creation to destruction. Additionally, appendices contain the Luftwaffe's chain of command, and a glossary of Luftwaffe-speak.If you are a student of WW2, and particularly the airwar, then you should definitely try to pick up a copy. Highly recommended.
[EX A]:
Positive