メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.37130358425 43.8303230725549, 142.370433171168 43.8309581290269, 142.369201901107 43.8318590589707, 142.368002129336 43.8327229888945, 142.366772246959 43.8318456865559, 142.365474225059 43.8309402751904, 142.366948262005 43.8297961621508, 142.36795132486 43.8290997021586, 142.369512844305 43.8279695662206, 142.370374986854 43.8273683033086, 142.372868914015 43.8291826349464, 142.372708629992 43.8292990114405, 142.372490104102 43.8294647291333, 142.37188539683 43.8298932047096, 142.371419134108 43.8302387649314, 142.37130358425 43.8303230725549)) ^^http://www.opengis.net/ont/geosparql#wktLiteral