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

The property 'biomechanically related to' applies to instances of 'anatomical structure', and 'transparent eye structure' is a subclass of 'anatomical structure'. Which class can appear as the value of 'biomechanically related to' for instances of 'transparent eye structure'?

A. anatomical structure
B. scum
C. ingestion
D. thermoplastic material

Answer: anatomical structure