メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.558290353446 31.5880171651129, 130.558843261104 31.5882902515739, 130.55874586879 31.5884495865925, 130.558327886747 31.589053281994, 130.55818255728 31.5892875650424, 130.557905519264 31.5896952953586, 130.557855683254 31.5897981408362, 130.55723009558 31.5895739815226, 130.556619925547 31.5893631192041, 130.556684069052 31.589272584708, 130.557156722233 31.5885819893863, 130.557515353548 31.5880750497889, 130.557552348731 31.588024303572, 130.557744932412 31.587745652639, 130.558290353446 31.5880171651129)) ^^http://www.opengis.net/ont/geosparql#wktLiteral