メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.116476644907 37.9178863733269, 140.11510408126 37.9180683529403, 140.114390584526 37.9181548062122, 140.113952720189 37.9164888018891, 140.114666480188 37.9163737736437, 140.115758607641 37.9161862900358, 140.116384678488 37.9161337874776, 140.116497344973 37.9161243365015, 140.117108550812 37.916069909722, 140.117197051671 37.9173947794185, 140.117229714451 37.917805075337, 140.116476644907 37.9178863733269)) ^^http://www.opengis.net/ont/geosparql#wktLiteral