メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.719664755621 35.3671449697222, 136.717578713821 35.3672493831019, 136.715536364957 35.3673565288228, 136.713461324623 35.3674518282102, 136.713303137554 35.3652976955204, 136.715378087303 35.3652195150845, 136.7174117972 35.3651130483319, 136.719502817256 35.3650269707627, 136.719553825642 35.3656941112865, 136.719664755621 35.3671449697222)) ^^http://www.opengis.net/ont/geosparql#wktLiteral