メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.369700991335 43.8198177926353, 142.369435560943 43.819622624963, 142.367980964974 43.8185925311234, 142.368066676408 43.8184520112977, 142.36828182205 43.8180464235699, 142.368429908224 43.8181157678633, 142.368665540113 43.8179533647085, 142.370350684339 43.8167528729131, 142.371926834513 43.8178805594167, 142.372155762008 43.8180563875564, 142.371366424659 43.8186147605331, 142.370971493168 43.8189140736723, 142.369700991335 43.8198177926353)) ^^http://www.opengis.net/ont/geosparql#wktLiteral