メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.886717055986 35.2360630499434, 136.886507724854 35.2360703106189, 136.88474018888 35.2360864024976, 136.884748403158 35.2357487362604, 136.884731271145 35.2356029887254, 136.884715872285 35.233454938004, 136.886690634878 35.2334387648669, 136.886698441681 35.2336199852968, 136.886717055986 35.2360630499434)) ^^http://www.opengis.net/ont/geosparql#wktLiteral