メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.866553114047 35.2767369683765, 136.866517125649 35.2771691425984, 136.86650170851 35.2771697385182, 136.866482443427 35.2774013870355, 136.86646826457 35.2776103708117, 136.866412972601 35.2780429206158, 136.86635630749 35.2785869401826, 136.864786016134 35.2785786466449, 136.86415066406 35.2785788408064, 136.864469197389 35.276337747067, 136.865107527513 35.2763331246003, 136.866589942119 35.2763382473257, 136.866553114047 35.2767369683765)) ^^http://www.opengis.net/ont/geosparql#wktLiteral