Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great report for a great project.

I enjoyed "Decade of the Wolf" both for the information given on the reintroduction of gray wolves to Yellowstone as for the manner in which it is written. The first-person delivery of the tale is quite engaging and readable. However I would have liked to see more hard data, especially on the dramatic changes brought to Yellowstone ecosystems as a result of the reintroduction of the wolf.