メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.652571054023 42.8373044924788, 141.653075414071 42.8380830375733, 141.652394897033 42.8383330315373, 141.651063366203 42.8388242313016, 141.650823771783 42.8384586519594, 141.650809691129 42.8384373383584, 141.650567473978 42.8380862334757, 141.650538256993 42.8380440210917, 141.650307673444 42.8377107711489, 141.650206744583 42.8375734446541, 141.650046580305 42.8373555572524, 141.649981815118 42.8372439507587, 141.649725786905 42.836844734603, 141.649531799346 42.8365622445141, 141.649462100054 42.8364620054769, 141.650795325791 42.8359743503666, 141.651065182999 42.8363768019435, 141.651768840437 42.8361088605896, 141.652571054023 42.8373044924788)) ^^http://www.opengis.net/ont/geosparql#wktLiteral