メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.350821210408 43.7728153778946, 142.350964378945 43.7730770542565, 142.351021447467 43.7731878820195, 142.349623321363 43.7736069989152, 142.349416453285 43.7732100625053, 142.349209512015 43.7728256227509, 142.350609969294 43.7724317550518, 142.350665129689 43.7725359212716, 142.350821210408 43.7728153778946)) ^^http://www.opengis.net/ont/geosparql#wktLiteral