premise: Wearing a black shirt, sunglasses and a tiny striped tie, the man with the kewpie-doll hair sits behind his drum set. hypothesis: A drummer in a black shirt and sunglasses is sitting at his drum set on a stage.
neutral: Just because a person sits behind his drumset he cannot be considered as a drummer. The fact that a person sits behind his drumset doesn't imply that he is on a stage.