Task: Property Constraint Reasoning (ontology: Business_Finance/Occupation_Ontology)

The property 'has participant' applies to instances of 'occurrent', and 'spatiotemporal region' is a subclass of 'occurrent'. Which class can appear as the value of 'has participant' for instances of 'spatiotemporal region'?

A. relational quality
B. continuant
C. continuant fiat boundary
D. object aggregate

Answer: continuant