メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.350129907014 43.0618230727186, 141.349833435399 43.0629830066936, 141.34828934763 43.0627740618218, 141.348403870671 43.062211413111, 141.348566265982 43.0616216434182, 141.348720268117 43.0610153494489, 141.349757064802 43.06115566416, 141.349723029093 43.0612857867613, 141.350238613665 43.0613550395805, 141.350129907014 43.0618230727186)) ^^http://www.opengis.net/ont/geosparql#wktLiteral