メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.768294076533 35.0827356409571, 136.768174601168 35.0827537028678, 136.76745172413 35.0829133902906, 136.766914756158 35.0830730494032, 136.765925121626 35.0834005247042, 136.765488758111 35.0822655272028, 136.765430370505 35.0820980751174, 136.765599578059 35.0817531949431, 136.765724093533 35.081490424703, 136.765744334379 35.0813799236965, 136.765785063676 35.0804715004071, 136.768384769764 35.0805345245143, 136.768334401625 35.0817796837702, 136.768307458949 35.0822423577043, 136.768294076533 35.0827356409571)) ^^http://www.opengis.net/ont/geosparql#wktLiteral