メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.891881213724 43.4577954440061, 141.89204105929 43.4583741123834, 141.892057599082 43.4584380167863, 141.892347544198 43.4595581271975, 141.892299955345 43.4595859322392, 141.891705060632 43.4600155869053, 141.89096317378 43.460579274691, 141.890812916553 43.4607400925489, 141.89066371679 43.4601944392065, 141.890550935736 43.4597268892384, 141.89044680755 43.4592614401446, 141.890533623961 43.4592364653501, 141.890377262864 43.4588087579465, 141.890070189809 43.4577468878452, 141.890900006129 43.4576123170306, 141.891790718077 43.4574678735816, 141.891881213724 43.4577954440061)) ^^http://www.opengis.net/ont/geosparql#wktLiteral