メタデータ名 si246020021
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.0937500 42.8875000, 143.1000000 42.8875000, 143.1000000 42.8916667, 143.0937500 42.8916667, 143.0937500 42.8875000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral