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

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

A. transportation facility
B. artifact
C. general linear model
D. wet summer dry winter climate

Answer: artifact