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

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

A. cobalt group element atom(?x)
B. iron group element atom(?x)
C. yttrium atom(?x)
D. chromium group element atom(?x)

Answer: iron group element atom(?x)