メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.403369061902 43.074858052981, 141.402277123324 43.0755255585071, 141.401451376093 43.074824655601, 141.400495451547 43.0740622976202, 141.401705086037 43.072630565712, 141.402267803083 43.0723887214482, 141.402410475876 43.0726516144907, 141.402651884732 43.0730731283735, 141.402776677735 43.073324917599, 141.402783120577 43.0733377654822, 141.402888714709 43.073618317589, 141.40304537014 43.0742037047017, 141.403273945382 43.0746870823235, 141.403369061902 43.074858052981)) ^^http://www.opengis.net/ont/geosparql#wktLiteral