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

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

A. wavelength
B. stress
C. bedrock
D. gravity wind

Answer: wavelength