Instruct: Classify an Amazon review into positive or negative sentiment.
Query: GREAT

Barry Groves has taken a different angle to the lie that we have been told about fluoride and fluoridation, that it is "safe and effective". He has taken what the promoters have said and disected their lies to reveal the truth backing it up with true science, not paid for science that pays for the wanted outcome. This is yet another must have book for those who wish to find the truth about fluoride and fluoridation. He reveals the deliberate mistruths and twisted paid for science the ADA, CDC, USPHS, EPA and other organizations have promoted for many decades so they can profit and cover their lies.