メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.428015951379 43.0848448491903, 141.427711129699 43.0852027442821, 141.427151842829 43.085825918985, 141.426562593036 43.0856548596386, 141.426018820873 43.0854841958463, 141.425497791525 43.0853136933889, 141.424999877954 43.0851439169935, 141.424514008771 43.0849777424912, 141.424040140006 43.0847826774976, 141.423475194617 43.0845536864816, 141.424362738151 43.0835810429974, 141.4246727152 43.0832329695568, 141.424938668296 43.0829479446268, 141.425817367516 43.0833762498525, 141.428260972995 43.0845458820314, 141.428015951379 43.0848448491903)) ^^http://www.opengis.net/ont/geosparql#wktLiteral