Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lacking...

I was looking forward to reading the different reviews of BMW motorcycles in this book as I would expect from articles in MotorCyclist magazines. However, I find that the reviews posted were very inconsistent. Pictures are only black and white. Specifications are not even given in most of the reviews, and a some of the reviews don't even have a single picture with it.