メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.762718958567 43.1962404377648, 141.762648960344 43.1962090611391, 141.762695062681 43.1961594655656, 141.763235877503 43.1956064560111, 141.763499650372 43.1956843054837, 141.763868753877 43.1957468483541, 141.764157712224 43.1957822552986, 141.764476524919 43.1958289002574, 141.763640618546 43.1966904566966, 141.763015335851 43.1963732898744, 141.762807868543 43.1962802919371, 141.762840213463 43.1962462103076, 141.762751630736 43.1962062099203, 141.762718958567 43.1962404377648)) ^^http://www.opengis.net/ont/geosparql#wktLiteral