Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dimwitted and biased; there are better biographies of Plath

The best thing that I can say about this biography of Sylvia Plath is that it offers previously unpublished letters and interviews with several of her Cambridge friends. As an American student of Plath and literature, I felt constantly misinformed and oppressed beneath the weight of Stevenson's obviously anti-American bias.