Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Quite plausible Kennedy Assasination Theory

The jist of this book is that one of the gunmen in the Kennedy Assasination wasn't actually on the Grassy Knoll, he was "the umbrella man" caught by the Zapruder film opening his umbrella on the roadside at Dealy Plaza as the Presidential convoy was approaching; Mr. Cutler claims the umbrella was actually a CO2 powered rifle device, firing a silent (and relatively recoiless)explosive bullet that caused the President's head to explode. Some very good diagrams show the plausibility of this theory. And remember, How To Kill Vols. 1-4 show actual U.S. Army and CIA weapons that appear less plausible than the one proposed here.Whatever this theory's weaknesses, it's certainly a more plausible theory than the Warren Comission's "Magic Bullet" theory.Visit the Assasination Museum next time you're in Dallas!And remember, you heard about it here first!