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

The property 'spatial relation' applies to instances of 'geometrical object', and 'geometrical object 1d' is a subclass of 'geometrical object'. Which class can appear as the value of 'spatial relation' for instances of 'geometrical object 1d'?

A. invasive species
B. abrasion
C. geometrical object
D. nitrification

Answer: geometrical object