rdf('_:Alt1', rdf:type, rdf:'Alt'). rdf('_:Alt1', rdf:'_1', 'ftp://ftp.x.org'). rdf('_:Alt1', rdf:'_2', 'ftp://ftp.cs.purdue.edu'). rdf('_:Alt1', rdf:'_3', 'ftp://ftp.eu.net'). rdf('http://x.org/packages/X11', 'http://description.org/schema/':'DistributionSite', '_:Alt1').