メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.00012985213 35.0761132617878, 136.999466765992 35.0762073454303, 136.999336178992 35.0762363787862, 136.999343055127 35.0762047104133, 136.999660707468 35.0759154221114, 136.999740266494 35.0758285565501, 136.999939694975 35.0756823488985, 137.000230359017 35.0755673971832, 137.000188375263 35.0758197455094, 137.000094682091 35.0758964493463, 137.000097915681 35.0760075155845, 137.00012985213 35.0761132617878)) ^^http://www.opengis.net/ont/geosparql#wktLiteral