Instruct: Classify Amazon reviews into positive or negative sentiment
Query: NFP with ease

The Art of Natural Family Planning gives wonderful instructions on how to use the sympto-thermal method to deterimine when a woman is in the fertile or non-fertile stage of her cycle. I highly recommend this book for anyone who is concerned with using chemical or barrier contraceptive methods and wants a natural alternative. My husband and I have been practicing NFP for 2 years now and feel blessed by the openess it has brought to our marriage!