メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.6125000 32.5250000, 130.6187500 32.5250000, 130.6187500 32.5291667, 130.6125000 32.5291667, 130.6125000 32.5250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral