メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.560505443109 35.867150531684, 139.560092650013 35.8675301959178, 139.558744771249 35.8690805570183, 139.558545905473 35.8694979182688, 139.556910905785 35.8686013284994, 139.554966911085 35.8675352390146, 139.554965055191 35.8675342847182, 139.556554905461 35.8655685845369, 139.556887840688 35.8651690510062, 139.560505443109 35.867150531684)) ^^http://www.opengis.net/ont/geosparql#wktLiteral