メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.387171593557 43.0399094165994, 141.387766900237 43.0404587501721, 141.38732443186 43.0407240104989, 141.386916669269 43.0409824962432, 141.38649413271 43.0412343298193, 141.386122551989 43.0409040917511, 141.386019009946 43.0408120691352, 141.38578479776 43.0406050071724, 141.385705374353 43.0405359863307, 141.385551390611 43.0404021701918, 141.385821872655 43.0402243772124, 141.385965750712 43.0401383233005, 141.386223570654 43.0399745692167, 141.386831903493 43.0396003563271, 141.387105511282 43.0398492784514, 141.387171593557 43.0399094165994)) ^^http://www.opengis.net/ont/geosparql#wktLiteral