メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.589438364112 43.3305883276544, 145.590099048594 43.3308737100155, 145.591521075437 43.3314808962123, 145.590764597663 43.3324689752372, 145.590439336042 43.3323348234947, 145.589960949968 43.3321346864918, 145.589311834721 43.3318567013858, 145.588656576349 43.3315720006846, 145.588002088036 43.3312872031204, 145.588765491708 43.3303124391993, 145.589438364112 43.3305883276544)) ^^http://www.opengis.net/ont/geosparql#wktLiteral