メタデータ名 indicator-A141001
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.9812500 35.8250000, 137.9875000 35.8250000, 137.9875000 35.8291667, 137.9812500 35.8291667, 137.9812500 35.8250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral