メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.328247935002 37.3916345727624, 140.327286284404 37.3923339743928, 140.326695265846 37.391827318461, 140.326091002894 37.3913315562914, 140.326543226443 37.3909758555046, 140.327100405145 37.3914157743556, 140.327547023037 37.3910600932284, 140.328247935002 37.3916345727624)) ^^http://www.opengis.net/ont/geosparql#wktLiteral