メタデータ名 sacs
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.639822009293 43.9387540292103, 141.640801752317 43.9395605617061, 141.640323560614 43.9398632978937, 141.639339119391 43.9390643040921, 141.63836761416 43.938273231006, 141.63885226889 43.9379568832409, 141.639822009293 43.9387540292103)) ^^http://www.opengis.net/ont/geosparql#wktLiteral