メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.362020797227 43.1476027034027, 141.362103135724 43.1479530238192, 141.360648849319 43.148132783894, 141.360084770565 43.148204412005, 141.35950228684 43.1482800427248, 141.359299542237 43.1474646074895, 141.359256473122 43.1472223377486, 141.359032554089 43.1462118533334, 141.359640813445 43.146145637858, 141.360190875194 43.1460789653495, 141.360285055496 43.1465060369441, 141.360779775773 43.1464473698433, 141.361203239874 43.1463946164089, 141.361724047484 43.1463318578404, 141.361797804356 43.1466709281359, 141.362020797227 43.1476027034027)) ^^http://www.opengis.net/ont/geosparql#wktLiteral