Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: great book to start for commodities

i bought the book to start understanding all the jargons and the undecipherable codes commodity traders yap-yaping. I was surprised, it's simple yet it provides me, who had no previous understanding of commodities market, let alone things such as backwardation etc, with knowledge about commodities market, and more importantly, helps make me feel less idiotic when talking with commods investors and traders. I simply love the book.