メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.634434501821 35.3575177757768, 136.633220777071 35.3574598878611, 136.63327864542 35.3568884523773, 136.63447787295 35.3568618396205, 136.634461807953 35.3570832479677, 136.634434501821 35.3575177757768)) ^^http://www.opengis.net/ont/geosparql#wktLiteral