Which of the following is not a property of a good system for representation of knowledge in a…

A good system for representing knowledge in a domain should have four properties (Rich and Knight): representational adequacy, the ability to represent every kind of knowledge needed; inferential adequacy, the ability to derive new knowledge; inferential efficiency, the ability to steer inference along productive lines; and acquisitional efficiency, the ability to take in new knowledge easily. "Presentation adequacy" is not among them; it echoes representational adequacy, but that property is about representing knowledge, not presenting it.