メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.038854174492 43.5585976873982, 142.038509450831 43.5586788776429, 142.038173005161 43.558777382046, 142.037822208312 43.5588800439294, 142.037207368361 43.5591074298102, 142.037032952287 43.5588878380911, 142.036359876783 43.559162088232, 142.035751285225 43.5582575043892, 142.036041602047 43.5581467559449, 142.036110393281 43.5580473044486, 142.037287725102 43.5576043645518, 142.037949150791 43.5573449970884, 142.037948658614 43.5573680273784, 142.037971100919 43.5574269302508, 142.038526847743 43.5581730337746, 142.038837714726 43.5585763147831, 142.038854174492 43.5585976873982)) ^^http://www.opengis.net/ont/geosparql#wktLiteral