Task: SWRL-based Rule Reasoning (ontology: Food_Agriculture/Crop_Ontology)

Suppose an individual ?x satisfies: 1-9 scale plant vigor(?x). Which conclusion is one valid inferred conclusion?

A. 1-9 scale calyx(?x)
B. ordinal(?x)
C. date(?x)
D. 1-9 scale fruit flavor(?x)

Answer: ordinal(?x)