メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.782509784064 35.4455535613118, 136.782484051741 35.4453001748869, 136.783611310777 35.4451274048367, 136.783596233231 35.4448402835898, 136.784444534687 35.4448059526524, 136.784600761223 35.4447975025375, 136.784624217564 35.4450509901787, 136.782509784064 35.4455535613118)) ^^http://www.opengis.net/ont/geosparql#wktLiteral