メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.633557821256 37.0665208713638, 138.632755296228 37.0673808916824, 138.632059842371 37.0680806902147, 138.631042756985 37.0689919761754, 138.630461216171 37.0678619559614, 138.629932668542 37.0669054186859, 138.628858577187 37.0652880435075, 138.627040879279 37.0636170397944, 138.626562454135 37.0633753686272, 138.627079365552 37.0629614142012, 138.627421810272 37.0625803116477, 138.628581085158 37.0614368535537, 138.629088393143 37.0607571977657, 138.629252047961 37.0602622300676, 138.629330367005 37.0597651710098, 138.629254047606 37.0575708748633, 138.629226489405 37.0568834939179, 138.629225766965 37.0564605164535, 138.629415930734 37.0557887364981, 138.629560420154 37.0554078410421, 138.630007871928 37.0547411315412, 138.630416239122 37.0543599454468, 138.63074573058 37.0541480925426, 138.631141526135 37.0541264639119, 138.631669332202 37.0541576320306, 138.631986176104 37.0542630932193, 138.633307182067 37.0551605156545, 138.634569595993 37.0564862485567, 138.635495176645 37.0575744590712, 138.636871740845 37.0599417049791, 138.638370911657 37.0622119137092, 138.637471912193 37.0630358257398, 138.636267760807 37.0640317969443, 138.633947325902 37.0661034394872, 138.633557821256 37.0665208713638)) ^^http://www.opengis.net/ont/geosparql#wktLiteral