メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.262588540772 44.0249612421125, 144.262568527233 44.0249918021912, 144.260943763936 44.0249845936489, 144.261352129659 44.0243696016679, 144.261447257023 44.0242433340724, 144.262004612778 44.0243278839291, 144.262235418519 44.0243464667551, 144.262361116821 44.0243518041923, 144.263009171373 44.0243290331274, 144.262899803039 44.0245008497415, 144.26266631454 44.0248636100565, 144.262588540772 44.0249612421125)) ^^http://www.opengis.net/ont/geosparql#wktLiteral