メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.187661878921 34.4855828981723, 134.186991542845 34.4858969786099, 134.186556243081 34.4849338344262, 134.186928256952 34.4847246815417, 134.18719187775 34.484895330427, 134.187661878921 34.4855828981723)) ^^http://www.opengis.net/ont/geosparql#wktLiteral