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