メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.443524049611 43.0494512758374, 141.443500195202 43.0499327316566, 141.443489162589 43.0500428620679, 141.443477181585 43.050225495835, 141.44345748417 43.0503858521129, 141.443407715833 43.0505284833955, 141.443353303935 43.0506558203025, 141.442254914338 43.0508332550982, 141.441729262095 43.0509273745017, 141.441548879857 43.0503647222886, 141.441361160705 43.0498206554807, 141.441172239371 43.0492222852083, 141.442486781583 43.0489877294067, 141.442525709708 43.0489807598219, 141.443571310298 43.0487970413317, 141.443524049611 43.0494512758374)) ^^http://www.opengis.net/ont/geosparql#wktLiteral