メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.631698077478 35.3593242117738, 136.63026748348 35.3592475155415, 136.63028832914 35.35874021452, 136.63173406784 35.3588262726107, 136.631714085397 35.3590604097362, 136.631698077478 35.3593242117738)) ^^http://www.opengis.net/ont/geosparql#wktLiteral