メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.015551676889 34.8847131619574, 137.015363514021 34.8851798794115, 137.015164579448 34.8856172854624, 137.013763335548 34.8852422687987, 137.013463404632 34.8851647032587, 137.013535031696 34.8848566613378, 137.013668312502 34.8842383815491, 137.01376390218 34.883760069961, 137.015714860202 34.8843127578398, 137.015551676889 34.8847131619574)) ^^http://www.opengis.net/ont/geosparql#wktLiteral