メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.386694757877 43.7563089640191, 142.386741817287 43.756894283254, 142.385901491217 43.7571557470424, 142.385784336602 43.7569240696876, 142.385865678121 43.7568944915438, 142.385709035951 43.7565925389367, 142.385515326907 43.7562390313252, 142.385432258905 43.7560526182651, 142.386628578372 43.7557204863345, 142.386640439587 43.7558320364254, 142.386694757877 43.7563089640191)) ^^http://www.opengis.net/ont/geosparql#wktLiteral