メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.838099036586 43.7968437935935, 143.836218772831 43.7973286589364, 143.836406316809 43.7958069314494, 143.836713628526 43.795647694304, 143.837152971396 43.7953236384226, 143.83762435088 43.7948276069758, 143.837965263439 43.7942225257661, 143.838269903043 43.793691856839, 143.838431401538 43.7932878531492, 143.838738818259 43.792858738985, 143.839203231025 43.7925844459677, 143.839507688105 43.7924573058207, 143.839293423162 43.7946662647221, 143.839015274036 43.7967660027382, 143.83863256373 43.7967984877604, 143.838099036586 43.7968437935935)) ^^http://www.opengis.net/ont/geosparql#wktLiteral