<http://caligraph.org/ontology/Dam_failure>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Dam_failure_in_the_United_States>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Dam_failure> .
<http://caligraph.org/ontology/Dam_failure>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Dam_failures> .
<http://caligraph.org/ontology/Dam_failure>	<http://www.w3.org/2000/01/rdf-schema#label>	"Dam failure" .
<http://caligraph.org/ontology/Dam_failure>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Engineering_failure> .
<http://caligraph.org/ontology/Dam_failure_in_Europe>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Dam_failure> .
<http://caligraph.org/ontology/Tailings_dam_failure>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Dam_failure> .
<http://caligraph.org/ontology/Dam_failure_in_Brazil>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Dam_failure> .