<http://caligraph.org/ontology/Crossing_of_the_Niger_River>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/RestrictionHasValue_river_Niger%20River> .
<http://caligraph.org/ontology/RestrictionHasValue_river_Niger%20River>	<http://www.w3.org/2002/07/owl#onProperty>	<http://caligraph.org/ontology/river> .
<http://caligraph.org/ontology/RestrictionHasValue_river_Niger%20River>	<http://www.w3.org/2000/01/rdf-schema#label>	"Restriction onProperty=river hasValue=Niger River" .
<http://caligraph.org/ontology/RestrictionHasValue_river_Niger%20River>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Restriction> .
<http://caligraph.org/ontology/RestrictionHasValue_river_Niger%20River>	<http://www.w3.org/2002/07/owl#hasValue>	<http://caligraph.org/resource/Niger_River> .