メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.279621576713 38.3655068856716, 140.279538839761 38.3655064960616, 140.278232733274 38.3654562768323, 140.278179184593 38.3654560240456, 140.27820482158 38.3646326357178, 140.278170652816 38.3645706758505, 140.278209280008 38.3637494613767, 140.278739408851 38.3637787078961, 140.278703767763 38.3646252766822, 140.278740197143 38.3646312198441, 140.279664754837 38.36463177478, 140.279621576713 38.3655068856716)) ^^http://www.opengis.net/ont/geosparql#wktLiteral