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has role in vocab sql, emotion, ludo, ludo-gm, ludo-gp, ludo-vc, ludo-xapi, nrv, prissma, psh, provoc, s4ac, edupro
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has role in vocab tac, ao, cco, co, is, mo, olo, pbo, pr, rec, sim, wi, wo
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has role in vocab qb, rdf, xhv, rdfs, log, con, doc, rec54, xsd, owl, cal, geo, vs, swrl, exif, grddl, skos, rdfg, swp, gso, time, te, tzont, vcard, wdrs, skosxl, cnt, http, vin, fowl, adms, acl, cert, csvw, dqv, duv, earl, ldp, ma-ont, odrl, org, prov, rr, rdfa, rdft, sd, ui, ws
