メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.543730993078 39.4219822757773, 140.542685296404 39.4222319234918, 140.542359499738 39.4213834141947, 140.54353395784 39.4211223387041, 140.544678029776 39.4208788049901, 140.545723675944 39.4206408586548, 140.546458594128 39.4204842976424, 140.547125349517 39.4203392728115, 140.547436045588 39.4211877232185, 140.545939640878 39.4215096350241, 140.544688441402 39.421778530512, 140.543730993078 39.4219822757773)) ^^http://www.opengis.net/ont/geosparql#wktLiteral