メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.931663258541 35.0911401322761, 136.931862628017 35.0911896773614, 136.932044312632 35.0912515128046, 136.932138344526 35.0912835278441, 136.932101182256 35.0914124792175, 136.932047472509 35.0915988674177, 136.932179176331 35.0916332100552, 136.932182895294 35.0916437816268, 136.93216470415 35.092103919679, 136.931794914715 35.0920448186111, 136.931256542926 35.0919265107506, 136.93104677081 35.0918508151429, 136.93145420599 35.0910759182305, 136.931663258541 35.0911401322761)) ^^http://www.opengis.net/ont/geosparql#wktLiteral