メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.911135584158 34.7544899272127, 137.911067756238 34.7546393314202, 137.910938713525 34.7549260575263, 137.910795454879 34.7552320120771, 137.910039642528 34.7550110067653, 137.909711152642 34.7548967271393, 137.909091564718 34.7547074976685, 137.909270236251 34.754330163973, 137.909368515994 34.7541225952951, 137.909438745474 34.7539657395377, 137.909602742886 34.753599599058, 137.911287577838 34.7541551389955, 137.911135584158 34.7544899272127)) ^^http://www.opengis.net/ont/geosparql#wktLiteral