Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Product was defective from day on and lasted a whole 32 days and now will inflate but by the middle of the night you sleeping on the carpet.
Negative

It is curious that one one the more significant achievements of "Pastor" Charles Taze Russell is omitted above. That fact is that he was the primary founder of the Watchtower Bible and Tract Society, and the religion now known as "Jehovah's Witnesses." No small amount of his theology is controversial in the body of the Church as a whole, as it would be (for different reasons, perhaps) amongst Jehovah's Witnesses.
Negative

Found this on sale and excitedly tried it this morning in my coffee and a fresh fruit and yogurt smoothie. I wasn't pleased with results in the smoothie because it didn't seem to dissolve properly, probably because of the cold. This resulted in my smoothie having a "sandy grit" texture but the taste was okay. It did dissolve properly in the hot coffee and tasted just fine.Maybe an hour or so later my tummy started gurgling and shortly after was my first of MANY mad dashes to the bathroom today. This started with the smoothie at about 8 AM and has continued throughout the day (it is now 4:15 PM). The info about the product states that it does not cause gastrointestinal distress but other reviews support my experience that it certainly does too AND it continues for long after the product has surely been flushed (pun intended) from your body.

Negative