メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.424741336535 43.8013474058662, 142.425250883716 43.8016549686526, 142.425763267518 43.8019805462126, 142.425355166847 43.8023335436954, 142.42460670207 43.8029493860164, 142.424112900705 43.8026317406994, 142.423833033757 43.8024528825481, 142.423581627664 43.8023238540144, 142.422507391396 43.8016136283784, 142.423644658969 43.8006643149182, 142.424741336535 43.8013474058662)) ^^http://www.opengis.net/ont/geosparql#wktLiteral