メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.163837749156 34.975724204676, 137.162732975905 34.9759342557979, 137.160365468346 34.976393619458, 137.160036037943 34.9753605774556, 137.159643239824 34.9741320966584, 137.161870673398 34.9736449918594, 137.162012438578 34.9736133054918, 137.163500637183 34.9732874873908, 137.163557811261 34.9737604102853, 137.163577641718 34.9739244327452, 137.163649947344 34.974699908132, 137.163710157718 34.9753455853879, 137.163837749156 34.975724204676)) ^^http://www.opengis.net/ont/geosparql#wktLiteral