メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.63173406784 35.3588262726107, 136.63028832914 35.35874021452, 136.630289917089 35.3587015592757, 136.630304461253 35.3583478914678, 136.630306814013 35.3582910708327, 136.631775181881 35.3583465248612, 136.63173406784 35.3588262726107)) ^^http://www.opengis.net/ont/geosparql#wktLiteral