メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.958704360159 40.0195512803501, 139.95861566027 40.0210413446183, 139.95862176952 40.0215938950262, 139.956381523642 40.021569873289, 139.955978052019 40.0215685088631, 139.952831082504 40.0215657451017, 139.952686307825 40.0215656081274, 139.952669164105 40.0195051753592, 139.952723300724 40.0170227739788, 139.952871580207 40.0170334157836, 139.95603143298 40.017043378832, 139.958702493324 40.0170732822691, 139.958704360159 40.0195512803501)) ^^http://www.opengis.net/ont/geosparql#wktLiteral