<http://webisa.webdatacommons.org/concept/absent_period_>	<http://www.w3.org/2000/01/rdf-schema#label>	"absent period" .
<http://webisa.webdatacommons.org/concept/absent_period_>	<http://webisa.webdatacommons.org/ontology#hasPreModifier>	"absent" .
<http://webisa.webdatacommons.org/concept/absent_period_>	<http://webisa.webdatacommons.org/ontology#hasHead>	"period" .