メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.857261828691 35.408838778943, 136.855814703005 35.4087121645206, 136.85582076091 35.408231062019, 136.855850342075 35.4076440363536, 136.85636201016 35.4076643705064, 136.856993420832 35.4076883216222, 136.856966615444 35.4078488129427, 136.856950499757 35.4080037683964, 136.857261828691 35.408838778943)) ^^http://www.opengis.net/ont/geosparql#wktLiteral