メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.298516019955 43.0701861214927, 141.298794077631 43.0703994903305, 141.298600348369 43.0705019674495, 141.297989948959 43.0708246229958, 141.29753207308 43.0710666132093, 141.297762165301 43.0712923844423, 141.297114077422 43.0716382818889, 141.29638291117 43.0709815079418, 141.296630445908 43.0708447203912, 141.297065343774 43.0706043923565, 141.297515644668 43.0703619907511, 141.298245796443 43.0699688085019, 141.298516019955 43.0701861214927)) ^^http://www.opengis.net/ont/geosparql#wktLiteral