メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.116450148955 43.5405180323292, 142.11638615066 43.5409159232681, 142.116088979779 43.5409021832897, 142.114905798864 43.5408094588727, 142.114800495532 43.5408012130632, 142.113790855955 43.5406699304455, 142.11319984043 43.540516418609, 142.113367306917 43.5395110484999, 142.114224671376 43.5395722213584, 142.11471374751 43.5396110506812, 142.115134614545 43.5395847472356, 142.11555005826 43.5396273199243, 142.115944411338 43.5396890299117, 142.116207306285 43.5397352561503, 142.1165780641 43.5397682083329, 142.116450148955 43.5405180323292)) ^^http://www.opengis.net/ont/geosparql#wktLiteral