<http://caligraph.org/ontology/Volcanic_eruption_in_2021>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/RestrictionHasValue_eruptionYear_2021> .
<http://caligraph.org/ontology/RestrictionHasValue_eruptionYear_2021>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Restriction> .
<http://caligraph.org/ontology/RestrictionHasValue_eruptionYear_2021>	<http://www.w3.org/2000/01/rdf-schema#label>	"Restriction onProperty=eruptionYear hasValue=2021" .
<http://caligraph.org/ontology/RestrictionHasValue_eruptionYear_2021>	<http://www.w3.org/2002/07/owl#hasValue>	"2021" .
<http://caligraph.org/ontology/RestrictionHasValue_eruptionYear_2021>	<http://www.w3.org/2002/07/owl#onProperty>	<http://caligraph.org/ontology/eruptionYear> .