Task: Property Constraint Reasoning (ontology: Earth_Environment/EnvironmentOntology)

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

A. obsolete Limburger
B. obsolete Temperate Steppe Division (330)
C. obsolete plant fruit food product
D. occurrent

Answer: occurrent