<http://webisa.webdatacommons.org/concept/_sigma_10-20>	<http://www.w3.org/2000/01/rdf-schema#label>	"sigma 10-20" .
<http://webisa.webdatacommons.org/concept/_sigma_10-20>	<http://webisa.webdatacommons.org/ontology#hasHead>	"sigma" .
<http://webisa.webdatacommons.org/concept/_sigma_10-20>	<http://webisa.webdatacommons.org/ontology#hasPostModifier>	"10-20" .