Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: From a Sub acolyte

I studied Russian under the tutalage of Doctor David Murphy. He in turn was a student of Dr Rado Lencek. So I guess I am somewhat connected to the author. I highly recommend all of the late Doctor's works as they are the best on Slovene study currently available in English. The only problem is the price and or availability of his titles. Derbyshire has a good reference grammer that breaks the highly academic Lencek down for the layman.