メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.348709216392 44.4809751757941, 142.34757786859 44.4807015104677, 142.34761597123 44.480621321729, 142.347830374294 44.4801700812648, 142.348199083057 44.4793941083124, 142.348368929907 44.4794367818082, 142.349329511036 44.4796781032974, 142.349358615505 44.479684125891, 142.349124190108 44.4801501867985, 142.349102204487 44.4801939047332, 142.348750284554 44.4808935422599, 142.348709216392 44.4809751757941)) ^^http://www.opengis.net/ont/geosparql#wktLiteral