メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.348491713143 43.1190300417106, 141.348358203976 43.1195314042083, 141.348350412667 43.1195585599869, 141.348232256402 43.1200146839988, 141.348025005205 43.120725815527, 141.347565510173 43.1206623645041, 141.347100600673 43.1205950003459, 141.346642705857 43.1205272682635, 141.346831371473 43.1198214112248, 141.346960833461 43.1193545480822, 141.347085917637 43.1188725386749, 141.347796610343 43.1189630629981, 141.348452504815 43.1190262888438, 141.348491713143 43.1190300417106)) ^^http://www.opengis.net/ont/geosparql#wktLiteral