メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.82190708834 35.4020317707923, 136.818968327216 35.402489292868, 136.818287431766 35.39961994436, 136.819076830737 35.3995423486058, 136.81970989645 35.3995088080593, 136.81994947479 35.3994970278052, 136.819974850238 35.3997835018595, 136.821439991688 35.4010049027218, 136.821563460974 35.4012720080187, 136.82190708834 35.4020317707923)) ^^http://www.opengis.net/ont/geosparql#wktLiteral