メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.451141972934 40.5508514547902, 141.450810933452 40.5507222526083, 141.450671914776 40.5506807819181, 141.450423403251 40.5504835547172, 141.450242568813 40.5504084983572, 141.450104923484 40.5503606522712, 141.449931096717 40.5503003333356, 141.449922483846 40.5502665704458, 141.449066151771 40.5497862938198, 141.449390061966 40.5498078532757, 141.449599738427 40.5498450086713, 141.450907300993 40.5501139302687, 141.451027292963 40.5504381053614, 141.451141972934 40.5508514547902)) ^^http://www.opengis.net/ont/geosparql#wktLiteral