メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.103221139707 43.8168685144331, 144.103481535291 43.8175378802552, 144.103483035032 43.8175926005564, 144.103464776886 43.8175988736621, 144.103501397124 43.8176586843655, 144.102935930641 43.8178451585787, 144.102494006096 43.8179817912626, 144.102453999746 43.8179128758516, 144.102052664568 43.8172204617333, 144.101552237842 43.8163569662478, 144.102733201975 43.8160136104138, 144.103115338987 43.816587774392, 144.103221139707 43.8168685144331)) ^^http://www.opengis.net/ont/geosparql#wktLiteral