Fig. 4.

The class diagram of the diabetes drug class. DMTO is a comprehensive ontology of diabetes treatment knowledge. One of the most important classes is the diabetes drug class. It is a subclass of the drug class, which has other subclasses. The semantics of this class are represented by many object and data properties, such as contradicte with, has MoA, has active ingredient, has dose, has cost, etc. The green lines indicate data properties, the blue lines indicate object properties, rectangles indicate classes, and the black lines indicate subclass properties