メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.37822086404 43.7587733292999, 142.378505173986 43.7593027968672, 142.377048310624 43.7597359749025, 142.376760547864 43.7592026750489, 142.37659380669 43.7588957122459, 142.376484022496 43.7586652657537, 142.377427289245 43.7583954584543, 142.377966818134 43.7582440551797, 142.37822086404 43.7587733292999)) ^^http://www.opengis.net/ont/geosparql#wktLiteral