メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.609240293581 43.3064080099353, 144.6088424578 43.3064492742653, 144.60364690157 43.3069920306801, 144.602976832303 43.3055594842583, 144.604252619205 43.3049235107344, 144.606928254478 43.3036495934701, 144.607420609996 43.3041454880207, 144.607889023572 43.304609735712, 144.60807967886 43.3047987701653, 144.608534786466 43.3052821367605, 144.608877276724 43.3057168398632, 144.60908192078 43.3060481294502, 144.60920784591 43.3062961622784, 144.609240293581 43.3064080099353)) ^^http://www.opengis.net/ont/geosparql#wktLiteral