Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A classic golf instruction book

Ernest Jones was a famous instructor whose most famous theory was Swing the Clubhead. There have been many pictures over the years of Jones swinging a penknife attached to a handkerchief, sometimes alone, sometimes while griping a golf club.But reading the book was a bit of a disappointment. Its a very quick read and it seems full of Jones' explaining why swinging the clubhead is so important. But outside of the familary drawings of him swinging the penknife there isn't much instruction on how to swing the clubhead. Or how to get this feeling of swinging.