メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.183353540186 42.9270761979581, 143.182029477285 42.927734331407, 143.18192308655 42.9277871677794, 143.181574078529 42.927921937378, 143.18125371761 42.9280843236096, 143.180489438204 42.9284218393007, 143.179437168012 42.9289052924926, 143.179340791489 42.9289434870138, 143.179534341467 42.92773211563, 143.179651294382 42.9266846000796, 143.179653826106 42.926668403649, 143.17978131026 42.9258244763989, 143.180802342752 42.9259193087073, 143.182259746868 42.9259994794543, 143.183010139714 42.9263347645546, 143.183905397851 42.9268000988146, 143.18352537402 42.9269907583535, 143.183353540186 42.9270761979581)) ^^http://www.opengis.net/ont/geosparql#wktLiteral