メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.86627847511 35.4590652249548, 136.866674448054 35.4590133244462, 136.866740850919 35.459334904646, 136.866840977181 35.4598128754529, 136.866866798166 35.4599884720333, 136.86527295334 35.4602265734638, 136.865195749349 35.4599121844696, 136.865046297116 35.4592649305902, 136.866115723583 35.4590968970267, 136.86627847511 35.4590652249548)) ^^http://www.opengis.net/ont/geosparql#wktLiteral