メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.868035469387 35.2767493966272, 136.867999184177 35.2771774845365, 136.867965390161 35.2776228318144, 136.8679288062 35.2780502853735, 136.867882412951 35.2786120774207, 136.86635630749 35.2785869401826, 136.866412972601 35.2780429206158, 136.86646826457 35.2776103708117, 136.866482443427 35.2774013870355, 136.86650170851 35.2771697385182, 136.866517125649 35.2771691425984, 136.866553114047 35.2767369683765, 136.866589942119 35.2763382473257, 136.868082588237 35.2763290108172, 136.868035469387 35.2767493966272)) ^^http://www.opengis.net/ont/geosparql#wktLiteral