メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.061978807183 34.6304794274122, 135.062002374582 34.6306798686641, 135.06204054114 34.6309906554684, 135.06077897166 34.6310860919243, 135.060725483861 34.6305815749585, 135.060678217665 34.6301649163929, 135.061740765559 34.6300729253836, 135.061804064531 34.630140158855, 135.061956285594 34.6303984277418, 135.061978807183 34.6304794274122)) ^^http://www.opengis.net/ont/geosparql#wktLiteral