メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.945699679546 35.2217974446812, 136.94685082537 35.2220102135979, 136.946824467809 35.2227928078829, 136.94677331997 35.2237052098532, 136.945772097303 35.2236458110991, 136.945767130338 35.2236099591108, 136.944868403312 35.2233854602537, 136.944930256905 35.222858830729, 136.944967737493 35.2222686382719, 136.945005895548 35.2216420406186, 136.945050294973 35.221623107499, 136.945699679546 35.2217974446812)) ^^http://www.opengis.net/ont/geosparql#wktLiteral