Instruct: Classify a review as either positive or negative.
Query: Rookie mistake in chapter 2

I came across this book in a bookshop and browsed through it.I am surprised to find a glaring mistake in chapter 2 (chapter 1 is only 7 pages long). In the beginning few paragraphs of chapter 2, it briefly described serlvet container and mentioned one of the popular serlvet containers is WebLogic from IBM. WebLogic is not from IBM.I stopped browsing furthur.