メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.927416983675 35.2833972092348, 136.927651831035 35.2840690270214, 136.928061662369 35.2852273276691, 136.927818249167 35.2852876961146, 136.927748782964 35.2850780467845, 136.927409412484 35.284127988124, 136.927171422402 35.2834303189977, 136.926688976825 35.2833220415015, 136.92706576625 35.2826160757878, 136.927213151893 35.2828895419376, 136.927416983675 35.2833972092348)) ^^http://www.opengis.net/ont/geosparql#wktLiteral