メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.380120141204 43.0474883093307, 141.379839872519 43.0476562375354, 141.379480688191 43.0478779305479, 141.378483356649 43.0470064066702, 141.378871304594 43.0467712917887, 141.379307843674 43.046497019794, 141.380011120003 43.0460616073541, 141.380498291645 43.046494880108, 141.380993376187 43.0469351831121, 141.380787187497 43.0470657683441, 141.380120141204 43.0474883093307)) ^^http://www.opengis.net/ont/geosparql#wktLiteral