メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.186653861669 36.2335177440926, 137.186853943243 36.2337104463236, 137.185828426351 36.2343601700822, 137.184691777364 36.23512393114, 137.184555926713 36.2350259034216, 137.184127171188 36.2355254860686, 137.18382002358 36.2354703316229, 137.183528894646 36.2359678864083, 137.182539160184 36.2353362131407, 137.182696370937 36.2344909707646, 137.182771022347 36.2338744532333, 137.182969186243 36.2338277946658, 137.184963834671 36.2333646101094, 137.186267751139 36.2333424094693, 137.18664064039 36.2333390248046, 137.186653861669 36.2335177440926)) ^^http://www.opengis.net/ont/geosparql#wktLiteral