メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.943094753834 35.9019329402054, 139.943206698924 35.9027368995274, 139.94328048245 35.9032179086291, 139.943627124476 35.9039554372305, 139.943487770016 35.9041231230774, 139.942742486181 35.9035264993045, 139.941942358483 35.9029096389252, 139.942668173969 35.9022860095626, 139.943094753834 35.9019329402054)) ^^http://www.opengis.net/ont/geosparql#wktLiteral