メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.205212411288 35.3435965722245, 135.205896739682 35.3439278121439, 135.205588840867 35.344477878168, 135.204850057809 35.3440899431755, 135.205212411288 35.3435965722245)) ^^http://www.opengis.net/ont/geosparql#wktLiteral