<http://caligraph.org/ontology/United_States_tornado_in_May_2013>	<http://www.w3.org/2000/01/rdf-schema#label>	"United States tornado in May 2013" .
<http://caligraph.org/ontology/United_States_tornado_in_May_2013>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Tornado_in_the_United_States> .
<http://caligraph.org/ontology/United_States_tornado_in_May_2013>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/United_States_tornado_in_May_2013>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_United_States_tornadoes_in_May_2013> .