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

Suppose an individual ?x satisfies: Maize dwarf mosaic virus severity(?x). Which conclusion is one valid inferred conclusion?

A. Stenocarpella stalk rot incidence(?x)
B. Maize weevil number in Grain(?x)
C. Fusarium graminearum ear rot severity(?x)
D. Biotic stress(?x)

Answer: Biotic stress(?x)