メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.233268501056 35.2227553356792, 136.232991538754 35.2229314301888, 136.232852439855 35.2228049301063, 136.23308977339 35.2226289112426, 136.233268501056 35.2227553356792)) ^^http://www.opengis.net/ont/geosparql#wktLiteral