メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.576832436534 36.4874464070378, 136.576340732901 36.4881567934264, 136.575986617746 36.4886248453974, 136.57416326075 36.4877844349548, 136.574500937109 36.487305956802, 136.575034976553 36.4865794873467, 136.575461095317 36.4867969399699, 136.576832436534 36.4874464070378)) ^^http://www.opengis.net/ont/geosparql#wktLiteral