Instruct: Classify a given review into positive or negative sentiment.
Query: Good appetizer

The book is intended to provide a general idea of most instrumental techniques. The approach is however quite profound. Rather than promote another instrumental analysis book with little material application theory, the book is intended to underscore a source-sample interaction/principle and resultant sample-detector principle. Thus the logic is easily translatable. A good book. References enable the reader to read more about different techniques.