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

Suppose an individual ?x satisfies: 1-5 index(?x). Which conclusion is one valid inferred conclusion?

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

Answer: ordinal(?x)