メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.176260871894 34.8320242522495, 138.176267529879 34.8320806823538, 138.17633118586 34.8327612531799, 138.176458613998 34.8334613599474, 138.175621690162 34.833585629843, 138.174869979861 34.833705332028, 138.174827794028 34.833493725807, 138.17469471162 34.8329010750397, 138.174568838665 34.832250409908, 138.174957169722 34.8321928472385, 138.175359004456 34.8321439823678, 138.175799033642 34.8320852859296, 138.175772555615 34.8318752712892, 138.175707064071 34.8313563268546, 138.175957233994 34.8313386795263, 138.176178336284 34.8313230668414, 138.176260871894 34.8320242522495)) ^^http://www.opengis.net/ont/geosparql#wktLiteral