メタデータ名 C18341-19700701
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.9062500 35.1708334, 136.9125000 35.1708334, 136.9125000 35.1750000, 136.9062500 35.1750000, 136.9062500 35.1708334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral