メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.278628586335 44.0227706527015, 144.278467730847 44.0228886030964, 144.27843286778 44.0229750146137, 144.277769066614 44.0228212850202, 144.277583161402 44.0227763279589, 144.277397225841 44.0227304728731, 144.277340018877 44.0227160903507, 144.277573298979 44.0218586703589, 144.279488186405 44.0220403387195, 144.279137210638 44.0223150712863, 144.278851676756 44.022537469908, 144.278631925044 44.0227111031421, 144.278626000747 44.0227292474323, 144.278628586335 44.0227706527015)) ^^http://www.opengis.net/ont/geosparql#wktLiteral