メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.101720275944 43.8209431329243, 144.100995086733 43.8211666446933, 144.100963336161 43.8211134708761, 144.100301439122 43.8200036048207, 144.100298359989 43.8199982577824, 144.101032340905 43.8197767355544, 144.101161864363 43.8199955437582, 144.101917510274 43.8197586860367, 144.102455624162 43.8206400788336, 144.102492793978 43.8207050833178, 144.101720275944 43.8209431329243)) ^^http://www.opengis.net/ont/geosparql#wktLiteral