<http://webisa.webdatacommons.org/concept/tractor+trailer_rig_>	<http://webisa.webdatacommons.org/ontology#hasPreModifier>	"tractor trailer" .
<http://webisa.webdatacommons.org/concept/tractor+trailer_rig_>	<http://webisa.webdatacommons.org/ontology#hasHead>	"rig" .
<http://webisa.webdatacommons.org/concept/tractor+trailer_rig_>	<http://www.w3.org/2000/01/rdf-schema#label>	"tractor trailer rig" .