<http://caligraph.org/ontology/Song_about_natural_disasters>	<http://www.w3.org/2000/01/rdf-schema#label>	"Song about natural disasters" .
<http://caligraph.org/ontology/Song_about_Hurricane_Katrina>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Song_about_natural_disasters> .
<http://caligraph.org/ontology/Song_about_natural_disasters>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Environmental_song> .
<http://caligraph.org/ontology/Song_about_natural_disasters>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Song_about_floods>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Song_about_natural_disasters> .
<http://caligraph.org/ontology/Song_about_the_2011_T%C5%8Dhoku_earthquake_and_tsunami>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Song_about_natural_disasters> .
<http://caligraph.org/ontology/Song_about_climate_change>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Song_about_natural_disasters> .
<http://caligraph.org/ontology/Song_about_natural_disasters>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Songs_about_natural_disasters> .
<http://caligraph.org/ontology/Song_about_natural_disasters>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Work_about_natural_disasters> .