メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.414760685489 43.7797702240111, 142.414421607635 43.7784983290653, 142.415038468856 43.778270749081, 142.418135214229 43.7772243959939, 142.418962028243 43.7769559146359, 142.419691670883 43.7767146960332, 142.420537914249 43.7763947334541, 142.421503271216 43.7767780406538, 142.418705456607 43.7789013529832, 142.415302958873 43.7817393378825, 142.415188200035 43.781765556748, 142.415076379361 43.7817653994226, 142.414982942465 43.7817543692717, 142.414897514549 43.78042606717, 142.414760685489 43.7797702240111)) ^^http://www.opengis.net/ont/geosparql#wktLiteral