メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.032955654064 43.5629982250916, 142.032947524406 43.563066952897, 142.032714230301 43.5644072365268, 142.031824322784 43.5642909648218, 142.031052721127 43.5641405198998, 142.030068383083 43.5639715205523, 142.030619657471 43.5635491713445, 142.030698591949 43.5634898964754, 142.030861553482 43.5633674513532, 142.031475172293 43.5628905404758, 142.031549603977 43.5628326978638, 142.031980383972 43.5625109631137, 142.032659590608 43.5619893390996, 142.033236422602 43.5615484638133, 142.033255874498 43.5616723787182, 142.033121301756 43.5618497681708, 142.032955654064 43.5629982250916)) ^^http://www.opengis.net/ont/geosparql#wktLiteral