メタデータ名 unitMeasure
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.9437500 36.1000000, 137.9500000 36.1000000, 137.9500000 36.1041667, 137.9437500 36.1041667, 137.9437500 36.1000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral