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

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

A. porphyrins(?x)
B. phthalocyanines(?x)
C. cyclic tetrapyrrole(?x)
D. phorbines(?x)

Answer: cyclic tetrapyrrole(?x)