メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.387266236429 43.7625286630393, 142.387544534931 43.7630412420604, 142.386837311352 43.7632552980242, 142.386185476926 43.7634445489745, 142.386087055414 43.7632901674737, 142.385941434774 43.762993703498, 142.386077624831 43.762888500037, 142.385773683224 43.7623419474656, 142.385863136298 43.7623078411446, 142.38695854815 43.7619714281241, 142.387266236429 43.7625286630393)) ^^http://www.opengis.net/ont/geosparql#wktLiteral