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

The property 'has restoring force' applies to instances of 'wave', and 'surface wave' is a subclass of 'wave'. Which class can appear as the value of 'has restoring force' for instances of 'surface wave'?

A. forestry
B. phenomena
C. tectonic process
D. spatial representation

Answer: phenomena