Qualia, or phenomenological consciousness, is an inherently first-person phenomenon. Nevertheless, the relationship between cognition and phenomenal qualia of consciousness is disputed. Phenomenal consciousness has many different experienced qualities, often referred to as qualia. Philosophers of mind call the subjective aspects of mental events "qualia" or "raw feels". Only one melody from this hymnal survives, "O quanta qualia". It is not to be confused with consciousness in the sense of qualia. Daniel Dennett identifies four properties that are commonly ascribed to qualia. Many philosophers consider the "elimination" of qualia implausible, if not incomprehensible. Philosophers have long confronted the problem of "qualia". A similar argument is applied to the notion of "absent" qualia. Frank Jackson offers what he calls the "knowledge argument" for qualia. Chalmers provides his Dancing Qualia Argument for this purpose. Learning transmits information, but experiencing qualia doesn't transmit information; instead it communicates abilities. Another way of defining qualia is as "raw feels". First, it is intended to show that qualia exist.