メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.107915310593 43.8175396513655, 144.107438729668 43.8176982439745, 144.106545021016 43.8180475417743, 144.105504549256 43.8184436090362, 144.105470703508 43.8184545652134, 144.104755806849 43.8171903702619, 144.105078814348 43.817077601127, 144.105839379651 43.8169196228655, 144.106739862217 43.8166701270911, 144.107427374426 43.8164616770552, 144.107504376767 43.8164394679191, 144.107552519766 43.8165137506532, 144.107854207444 43.817279249022, 144.107915310593 43.8175396513655)) ^^http://www.opengis.net/ont/geosparql#wktLiteral