メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.756857120058 35.4230948894334, 136.757096706733 35.4242622009402, 136.75662069546 35.424245989313, 136.756631655057 35.4240351530656, 136.756746792391 35.4240209633172, 136.756699050787 35.4236541963527, 136.756715859544 35.4236223523322, 136.756734100285 35.4235878044958, 136.756710525407 35.4234692772817, 136.75668460129 35.4233390891689, 136.75661668517 35.4233464312782, 136.756565484807 35.4230939081039, 136.756857120058 35.4230948894334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral