メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.176518636772 35.3440276882657, 137.176108615911 35.3438907514649, 137.17585713225 35.3438078146367, 137.175581293859 35.3442570597045, 137.174337764531 35.3438799686749, 137.173695997628 35.3435899404665, 137.173881833312 35.3433860560203, 137.174046625644 35.3432596368061, 137.174264032528 35.3431303979136, 137.174495455771 35.3430270028078, 137.175354576209 35.3428746874501, 137.176672523727 35.3426576102366, 137.177685683732 35.3424204774168, 137.176518636772 35.3440276882657)) ^^http://www.opengis.net/ont/geosparql#wktLiteral