メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.411909149111 43.7667514822451, 142.412631840652 43.7667213725512, 142.412740726081 43.7676951795604, 142.41274172149 43.7677040209521, 142.41200405535 43.7677548781956, 142.410551595124 43.7678465795614, 142.409406096055 43.7679079364403, 142.408699937956 43.7679264514564, 142.408644787296 43.7673250995653, 142.408617018235 43.7669532928284, 142.409201405503 43.7669169086449, 142.409243745522 43.7669122607005, 142.409290610031 43.766907097947, 142.410445984546 43.766840824217, 142.411909149111 43.7667514822451)) ^^http://www.opengis.net/ont/geosparql#wktLiteral