メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.713303137554 35.3652976955204, 136.707867830728 35.3655572782325, 136.707729261348 35.363614531851, 136.709806984496 35.3633566900889, 136.713152935503 35.3629363417891, 136.713303137554 35.3652976955204)) ^^http://www.opengis.net/ont/geosparql#wktLiteral