メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.392990758319 33.5791149774201, 130.392767749028 33.5789449292073, 130.392460493391 33.5786553130017, 130.392439728961 33.5786340437637, 130.393014087578 33.5783052905267, 130.393453599578 33.5781123901677, 130.393450807032 33.5781144556951, 130.392990758319 33.5791149774201)) ^^http://www.opengis.net/ont/geosparql#wktLiteral