メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.694551287862 35.3372714602502, 136.694792170717 35.3388146698891, 136.693607371144 35.3389305204121, 136.693362865804 35.337385746562, 136.693305157695 35.3369177705441, 136.693278365992 35.3363283646338, 136.693240781876 35.3356972242488, 136.694762543617 35.3364806604261, 136.694478228428 35.3368041281305, 136.694551287862 35.3372714602502)) ^^http://www.opengis.net/ont/geosparql#wktLiteral