メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.723498516937 35.1810663538733, 136.723745037751 35.1810266240409, 136.723909984271 35.1815098251846, 136.723663398779 35.1815610333341, 136.723220388726 35.1816589853495, 136.722752411448 35.1817575479935, 136.722773222708 35.1818582565862, 136.722639715732 35.1818968497965, 136.722579746103 35.1819145870644, 136.722526935774 35.1818227045226, 136.722484104969 35.1817568439175, 136.722360469297 35.1814942120935, 136.722320308418 35.1814106858892, 136.722295196678 35.1813595379452, 136.722258164505 35.1812765162855, 136.722136151399 35.180952412738, 136.722085180704 35.1807510322994, 136.722102535899 35.1807142652726, 136.72216106907 35.1805741311747, 136.72235926226 35.1805488037772, 136.722365348536 35.1805967828314, 136.722576974675 35.1805543212033, 136.722608897898 35.180520002566, 136.723305983902 35.1803959421911, 136.723402467531 35.1806277001809, 136.723426103952 35.1807215883256, 136.723498516937 35.1810663538733)) ^^http://www.opengis.net/ont/geosparql#wktLiteral