メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.168865305674 34.6731455998301, 135.168665396483 34.6733407927464, 135.168541344133 34.6734836289203, 135.168308523701 34.6737090954622, 135.168187419581 34.673826369981, 135.16781658729 34.6735719899914, 135.167366198991 34.6732730800914, 135.167836175123 34.6728055908049, 135.168308738424 34.6723245591818, 135.168561299525 34.6724828395069, 135.168593384659 34.6725521510252, 135.168664646718 34.6727060939286, 135.168845645103 34.6730893918056, 135.168865305674 34.6731455998301)) ^^http://www.opengis.net/ont/geosparql#wktLiteral