メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.126906853748 42.9799768351414, 144.125280849142 42.9792087064523, 144.124119955553 42.9786471600482, 144.124281653927 42.978471150531, 144.124863378827 42.9778198673737, 144.125187466362 42.9774657248535, 144.125663086384 42.976922939049, 144.12697371578 42.9775773771396, 144.128400115893 42.9782897526778, 144.127970974612 42.9787794651123, 144.127264900139 42.9795739537681, 144.126906853748 42.9799768351414)) ^^http://www.opengis.net/ont/geosparql#wktLiteral