メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.771368645101 43.2047596353694, 141.770650645577 43.205520044792, 141.769614862029 43.204993306002, 141.769637018753 43.2049692753841, 141.769985420603 43.2046018658319, 141.770329075793 43.2042446328036, 141.77035153291 43.2042557678576, 141.771280306234 43.2047148903886, 141.771368645101 43.2047596353694)) ^^http://www.opengis.net/ont/geosparql#wktLiteral