Task: SWRL-based Rule Reasoning (ontology: Earth_Environment/EnvironmentOntology)

Suppose an individual ?x satisfies: gas molecular entity(?x). Which conclusion is one valid inferred conclusion?

A. transition element molecular entity(?x)
B. p-block molecular entity(?x)
C. main group molecular entity(?x)
D. inorganic molecular entity(?x)

Answer: main group molecular entity(?x)