メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.047814711679 42.9031843662071, 143.047291953541 42.9031453819775, 143.047187142661 42.9031375306501, 143.046865650979 42.9031154313841, 143.046780285599 42.9031096240164, 143.046540280177 42.9030931466081, 143.046331097033 42.9030780020895, 143.04628997021 42.9030750522927, 143.046300334332 42.9029959252967, 143.046389117318 42.9022869117963, 143.047914629183 42.9024017760554, 143.047865312164 42.9027649686542, 143.047824317156 42.9031096052816, 143.047814711679 42.9031843662071)) ^^http://www.opengis.net/ont/geosparql#wktLiteral