メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.422468155893 34.7552853230683, 137.42184456418 34.7553556619839, 137.421827781087 34.7558446157653, 137.421128296119 34.7560240028122, 137.420685436089 34.7561403015117, 137.420571397118 34.7559068604869, 137.420330317085 34.7559676567281, 137.419161499802 34.7562732432964, 137.418930333527 34.7553898502607, 137.418998854444 34.7538691532275, 137.420639310485 34.7539102007557, 137.421917917672 34.7539535468088, 137.422538404198 34.7539727989649, 137.422468155893 34.7552853230683)) ^^http://www.opengis.net/ont/geosparql#wktLiteral