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

The property 'determined by' applies to instances of 'system', and 'hydrographic feature' is a subclass of 'system'. Which class can appear as the value of 'determined by' for instances of 'hydrographic feature'?

A. manufactured product
B. system process
C. molecular messenger
D. material entity

Answer: material entity