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

The property 'is about' applies to instances of 'Work', and 'Complex Work' is a subclass of 'Work'. Which class can appear as the value of 'is about' for instances of 'Complex Work'?

A. F10 Person
B. F1 Work
C. Format type
D. Concept

Answer: Concept