メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.337892980575 43.0427571593628, 141.337851214393 43.0430925321467, 141.33785075328 43.0430962355886, 141.337812114475 43.0434067150951, 141.337731087266 43.0440605589486, 141.337232319575 43.0440256353662, 141.336012083729 43.0439528774161, 141.336047022115 43.0437567252975, 141.336096069391 43.0432947682243, 141.336129523977 43.0430047136756, 141.33617875558 43.042627083623, 141.336730529159 43.0426689757825, 141.336778705831 43.0426725966545, 141.33737309944 43.04271770844, 141.337513941703 43.0427283967384, 141.337892980575 43.0427571593628)) ^^http://www.opengis.net/ont/geosparql#wktLiteral