メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.89396305664 43.0173846329101, 142.893044927773 43.0168080872101, 142.892921110342 43.0167269180625, 142.892989189725 43.0166563473821, 142.893321199035 43.016312754982, 142.893343719404 43.0162757755436, 142.893378910934 43.0162179785997, 142.893485292745 43.0162862342, 142.893520598199 43.0163079087545, 142.893934582299 43.0159493664239, 142.89489464223 43.0165309436355, 142.894061609399 43.0172999659488, 142.89396305664 43.0173846329101)) ^^http://www.opengis.net/ont/geosparql#wktLiteral