Question: What was the nationality of the person being paid tribute to in the single "Skeptic"?
Sentence (from "Paul Gray (American musician)"): Paul Dedrick Gray (April 8, 1972 – May 24, 2010), also known as The Pig or by his number #2, was an American musician best known as the bassist, a backing vocalist, and a songwriter and one of the founding members of the Grammy Award-winning metal band Slipknot.
Relevant evidence: Yes