メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.020965311348 34.8095198996257, 137.020618859554 34.8094697498467, 137.020371281735 34.809427046056, 137.020161284632 34.8102541742031, 137.019745980849 34.8083825253805, 137.020672464953 34.8082629611264, 137.021309919607 34.8083493882473, 137.021083012567 34.8088894324627, 137.021032828434 34.8090791039108, 137.020965311348 34.8095198996257)) ^^http://www.opengis.net/ont/geosparql#wktLiteral