メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.283808637943 38.3735130407409, 140.283926320495 38.3742030882491, 140.283157766565 38.374276911546, 140.282887295507 38.3742949296048, 140.28261693411 38.3742984470298, 140.282566210476 38.3742725891797, 140.281472484947 38.3745204159168, 140.281411601085 38.3744431278866, 140.281329342188 38.3743430754692, 140.281135706472 38.3738035770361, 140.281759084256 38.3736670041228, 140.281797135573 38.3734066162565, 140.281869005953 38.3725419184532, 140.285339856363 38.372167093074, 140.285569028346 38.37338146687, 140.283808637943 38.3735130407409)) ^^http://www.opengis.net/ont/geosparql#wktLiteral