Fig. 13From: Friend of a Friend with Benefits ontology (FOAF+): extending a social network ontology for public healthSexual transmission knowledge is evoked from the rules in Listing 2. SWRL inference shows that individual (STI_person) has an sexually transmitted infection (“has an STI” = true) transmitted an STI (“transmitted STI”) to an individual (STI_partner). Inferences from Listing 1 are also shown with “sex with” and “knows”Back to article page