 If descriptive metaphysics is conceived as the “metaphysics of appearances”, this might suggest that non-existent objects would have to be posited as semantic values of referential NPs even with extensional predicates. Referential NPs should reflect entities of a certain sort whether or not they exist. However, non-intentional predicates are existence-entailing (Priest 2005), which means that in extensional contexts only actual entities as semantic values of referential NPs contribute to truth conditions. Thus, the building is tall is true only if the building being referred to is an actual building that is tall. In extensional contexts, referential NPs that turn out not to refer to actual entities better fail to have a semantic value rather than standing for nonexistent objects. 