メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.41664693421 43.0110236626753, 144.416854402065 43.0111569459081, 144.417397302122 43.0115140618681, 144.416844179837 43.0119718212703, 144.416256788282 43.0124581464636, 144.415521005714 43.0119956663807, 144.414664869069 43.011451273198, 144.415798793752 43.0104831371094, 144.416144834937 43.0107037481473, 144.416445161154 43.010894279855, 144.41664693421 43.0110236626753)) ^^http://www.opengis.net/ont/geosparql#wktLiteral