メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.316768050777 43.2059533338069, 141.312388075656 43.2069299008844, 141.311726923249 43.2064015920664, 141.308983201539 43.2043264024547, 141.302616987173 43.1992572687432, 141.303133652743 43.1988806453424, 141.303619326921 43.1986863355248, 141.3106480843 43.1972011387002, 141.313106566511 43.1966666002943, 141.313463186564 43.197408668933, 141.316768050777 43.2059533338069)) ^^http://www.opengis.net/ont/geosparql#wktLiteral