Instructions: In this task, you are given books product reviews in English language. The goal is to classify the review as "POS" if the overall sentiment of the review is positive or as "NEG" if the overall sentiment of the review is negative.
Input: Not one of his best . I enjoy the Hillerman Navajo mysteries because the characters are well developed. Not so in this book. I found the first half really boring and hard to get through. The characters were not people you could care about, an important issue for me
Output:
NEG