メタデータ名 C15520-19700401
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.6937500 34.4916667, 136.7000000 34.4916667, 136.7000000 34.4958334, 136.6937500 34.4958334, 136.6937500 34.4916667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral