メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.106639234491 43.8204722374876, 144.106453018341 43.8205118143977, 144.106385716163 43.8205275003368, 144.105838800446 43.8195520758127, 144.105942487588 43.8195195375364, 144.106143316304 43.8194564996329, 144.107252682528 43.8191082686069, 144.107233654077 43.8191460590045, 144.107088397747 43.8194351683988, 144.106773062276 43.8201338617709, 144.106642633514 43.8204252612858, 144.106639234491 43.8204722374876)) ^^http://www.opengis.net/ont/geosparql#wktLiteral