メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.401580803079 43.7607824362577, 142.403912491853 43.7606571852627, 142.403953590671 43.7611650828532, 142.404005570288 43.7616538746954, 142.404059164331 43.7621432610933, 142.403566811318 43.7621800624513, 142.402811576519 43.7622356345796, 142.402077190677 43.762272099792, 142.402142626408 43.7623311722283, 142.401626598235 43.7626512366528, 142.401410752707 43.7624784212658, 142.40082720959 43.762802138711, 142.400098351606 43.7628701242669, 142.399978609414 43.7618894627547, 142.399911345121 43.7611529276632, 142.399895515207 43.7608575787515, 142.401580803079 43.7607824362577)) ^^http://www.opengis.net/ont/geosparql#wktLiteral