メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.681417742826 35.3174296888582, 136.681921003364 35.3178289441018, 136.682492351972 35.3182876220534, 136.681349643773 35.3192331941787, 136.680786718389 35.3188099666435, 136.680273649652 35.3183985554311, 136.679773125282 35.3179666301631, 136.680898892993 35.3170233992657, 136.680913440757 35.3170045136276, 136.681417742826 35.3174296888582)) ^^http://www.opengis.net/ont/geosparql#wktLiteral