メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.35604961621 43.772858201531, 142.356276096589 43.7732601509236, 142.356180835316 43.7732814754843, 142.355585524031 43.7734645400004, 142.354819211157 43.7736861718172, 142.354604035463 43.7732839268253, 142.354308048662 43.7727287552333, 142.354740989135 43.7726148720272, 142.355858419804 43.7722807488711, 142.356157530779 43.7728250836677, 142.35604961621 43.772858201531)) ^^http://www.opengis.net/ont/geosparql#wktLiteral