メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.349468338398 43.1191329774699, 141.34936546117 43.1196804369909, 141.349343898728 43.1196778773532, 141.349271487783 43.120000389941, 141.349073766324 43.1208809458305, 141.348551089674 43.1208115178699, 141.348025005205 43.120725815527, 141.348232256402 43.1200146839988, 141.348350412667 43.1195585599869, 141.348358203976 43.1195314042083, 141.348491713143 43.1190300417106, 141.349468338398 43.1191329774699)) ^^http://www.opengis.net/ont/geosparql#wktLiteral