メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.013500365749 34.7793577525496, 138.013484468514 34.7795585584065, 138.013400895319 34.7807218891961, 138.011556339201 34.7806106708063, 138.010986135722 34.7805800640789, 138.010460055439 34.78055104075, 138.010296762841 34.7805288311863, 138.010120351955 34.7805091035814, 138.009669685853 34.7804372781687, 138.009730468121 34.7796968783372, 138.009753528038 34.7795425879745, 138.009775311879 34.7792568686932, 138.010145966255 34.7792020177144, 138.010185522828 34.7786374657377, 138.010187363624 34.7786146541245, 138.010270261975 34.7775733157078, 138.010487585536 34.7775874300284, 138.010547655347 34.7766095255015, 138.010620122266 34.7766098165412, 138.011219280775 34.776711951726, 138.01178601082 34.7768569181034, 138.013665033829 34.777351114623, 138.013500365749 34.7793577525496)) ^^http://www.opengis.net/ont/geosparql#wktLiteral