Task: Property Constraint Reasoning (ontology: Legal/LKIF_Core_Ontology)

The property 'held by' applies to instances of 'Mental Object', and 'Propositional Attitude' is a subclass of 'Mental Object'. Which class can appear as the value of 'held by' for instances of 'Propositional Attitude'?

A. Agent
B. Thing
C. Document
D. Action

Answer: Agent