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

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

A. dicarboxylic acid monoester(?x)
B. methyl ester(?x)
C. chlorophyllide a(?x)
D. divinyl chlorophyll b(?x)

Answer: methyl ester(?x)