Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good beginning, then downhill

I was reading The Mambo Kings Sing Songs of Love, a (I believe) Pulitzer Prize-winning novel by one Oscar Hijuelos upon which the movie THE MAMBO KINGS was based. I did something totally uncharacteristic of me: I junked it! It started out as a very interesting character study and a fascinating portrait of a particular time and place (NYC in the early 50s, in particular the Latin-American communities). However, at the point at which I gave up, it was leaning heavily on rather endless explorations of the sex lives of the two protagonist, depicted in great detail. Not my cup of tea, I can assure you! Oh well...money down the tubes!