メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.385664307187 43.0441021222822, 141.38600973262 43.0444070083021, 141.386157918523 43.0445272659623, 141.385771515216 43.044771631005, 141.385662454167 43.0448289012873, 141.385494286904 43.0449436062366, 141.384916952882 43.0452979999601, 141.384421298643 43.0448682642458, 141.383896974988 43.0444048328522, 141.385146331513 43.0436371247594, 141.385664307187 43.0441021222822)) ^^http://www.opengis.net/ont/geosparql#wktLiteral