Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A remarkable book

A truly remarkable book...not really science fiction at all,but rather historical fiction. Connie Willis uses the deviceof time travel to make the past feel real. Her medievalcharacters, from five-year-old Agnes to the social-climbingLady Imeyne, are unforgettable. Oddly, Kivrin--the maincharacter--is not as well developed. But perhaps thismakes sense since she is primarily there as an observer