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

The property 'was controlled by' applies to instances of 'process', and 'act of sampling' is a subclass of 'process'. Which class can appear as the value of 'was controlled by' for instances of 'act of sampling'?

A. rayleigh scattering
B. artifact
C. smart grid
D. delay

Answer: artifact