メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.449728531535 43.0482209888625, 141.449852421625 43.0486603677911, 141.45001553305 43.0490815245392, 141.450139641787 43.049504447609, 141.450423467904 43.0503926004293, 141.44981552508 43.0504849860859, 141.448957185176 43.0506332165754, 141.448349300561 43.0507391683363, 141.448198939492 43.0503005165582, 141.448004906639 43.0497103472341, 141.447926184439 43.0494409920074, 141.447855241125 43.0492186708771, 141.447781255797 43.0490127162594, 141.447723544487 43.048845768486, 141.447648821863 43.0485897331366, 141.447487692354 43.0481246311663, 141.449568337748 43.047771157258, 141.449728531535 43.0482209888625)) ^^http://www.opengis.net/ont/geosparql#wktLiteral