メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.825458804439 35.5179078275386, 137.825416516456 35.5178456917772, 137.825243656715 35.5179325366712, 137.824542004405 35.5170263522195, 137.825133168435 35.5167168626075, 137.825995690686 35.5162620280594, 137.826057422762 35.516341912223, 137.826502508026 35.516933144801, 137.826336588157 35.5170917181397, 137.825887161501 35.5175289733319, 137.825706189194 35.5177052066431, 137.825458804439 35.5179078275386)) ^^http://www.opengis.net/ont/geosparql#wktLiteral