メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.402887917851 43.7838027425479, 142.403383176541 43.7841220528424, 142.403912046205 43.7844447969831, 142.403400180536 43.7848893521774, 142.402290384665 43.7858239272659, 142.401910695024 43.7855897788368, 142.401573758896 43.7853828756525, 142.401227165403 43.7851607422831, 142.400867622251 43.7849399785506, 142.400530814246 43.784732650841, 142.401169081196 43.7842047526796, 142.401251104229 43.7842452905116, 142.401360121478 43.7842954458731, 142.402354235352 43.7834765191906, 142.402868695441 43.783795806412, 142.402887917851 43.7838027425479)) ^^http://www.opengis.net/ont/geosparql#wktLiteral