メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.434854265107 42.995907095583, 141.435407497304 42.9958914100994, 141.436460263829 42.9958559200203, 141.436330322153 42.9962570062637, 141.436226709134 42.9965868227038, 141.436101303584 42.9969199310754, 141.435992415063 42.9971918987243, 141.433972737074 42.9968170117922, 141.433503984723 42.9967326497603, 141.433477350768 42.9967324598215, 141.43325262578 42.9970685123017, 141.432772255021 42.9962338520552, 141.43379002688 42.9960925740519, 141.433834580912 42.9959186831269, 141.434315770413 42.9959241508517, 141.434854265107 42.995907095583)) ^^http://www.opengis.net/ont/geosparql#wktLiteral