Task: Class Definition Understanding (ontology: Legal/LKIF_Core_Ontology)

Which of the following definitions best describes 'Medium'?

A. An the concept is any owl:Thing which can act, i.e. play the 'actor' role wrt. an action
B. A the concept bears some (and only) expression(s) stated by some statement in writing.
C. A the concept is a bearer of expressions, i.e. externalised propositions. Propositions become expressions once they are externalised through some the concept.
D. Metaphor of physical concepts, i.e. the things we mentally manipulate, either in thought or memory

Answer: A the concept is a bearer of expressions, i.e. externalised propositions. Propositions become expressions once they are externalised through some the concept.