メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.832668907928 35.4155282478922, 136.830412534986 35.4154069402107, 136.830531411019 35.4138007830795, 136.830598656627 35.4129786957176, 136.830686995772 35.4116937157421, 136.830687447771 35.4116623800682, 136.832938937607 35.4117759213178, 136.832986332415 35.4117767566817, 136.832668907928 35.4155282478922)) ^^http://www.opengis.net/ont/geosparql#wktLiteral