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

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

A. artifact
B. adiabatic invariant
C. radiative forcing
D. mixed layer venting

Answer: artifact