メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.769959544925 43.2137768587654, 141.768362295808 43.2147218362872, 141.768605846675 43.2149313853165, 141.767644454846 43.2154833552944, 141.766658729456 43.2160644716521, 141.766613082427 43.2160243322892, 141.766330037592 43.21577529847, 141.766193528998 43.2156551635433, 141.765929099086 43.2154176004451, 141.766904803179 43.2148386993703, 141.767848548543 43.2142619748285, 141.767767139449 43.2141905318783, 141.7694239114 43.213146366628, 141.76946279752 43.213184156674, 141.769749012759 43.2135256059211, 141.769959544925 43.2137768587654)) ^^http://www.opengis.net/ont/geosparql#wktLiteral