メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.344819906781 43.7796681750406, 142.34435524057 43.7796971698476, 142.344315224386 43.7796946021429, 142.342890783415 43.7796033347233, 142.342544116927 43.7795811353575, 142.341139079844 43.7794708438132, 142.341166684152 43.7793441888047, 142.341549405638 43.7778091892002, 142.343252675112 43.7776134341203, 142.343091874388 43.7774005450703, 142.343118435005 43.7773964788193, 142.344494735583 43.7770086313787, 142.344699437382 43.7774005359008, 142.345866555223 43.7795313884223, 142.345525865339 43.779585774325, 142.34513128231 43.7796487659564, 142.344819906781 43.7796681750406)) ^^http://www.opengis.net/ont/geosparql#wktLiteral