. . . . "However, knowledge representation formalisms of the semantic web (such as DLs) have expressive limitations, for example composition of complex classes from classes and properties. Those limitations can be overcome by rule-based knowledge, specifically by using SWRL (Semantic Web Rule Language) rules [18]. SWRL rules are represented as implication of an antecedent (Body) and a consequent (Head):" . . . . "2019-11-07T12:47:11+01:00"^^ . .