メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.782748504018 35.4141770832072, 136.781623514516 35.4142305637052, 136.779982613524 35.414291932898, 136.77989253969 35.4142940050673, 136.779745065636 35.413832287883, 136.781603923864 35.4137644992165, 136.782721536735 35.4137323679582, 136.782748504018 35.4141770832072)) ^^http://www.opengis.net/ont/geosparql#wktLiteral