メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.415486094163 43.0090253148139, 144.414855885641 43.0095525989535, 144.414373684576 43.0099561874569, 144.413681244309 43.0095094726805, 144.413395521886 43.0093251277364, 144.412420711479 43.0086961046534, 144.41290365031 43.0082970814821, 144.413608525947 43.0076911063801, 144.415570555227 43.0089583121643, 144.415486094163 43.0090253148139)) ^^http://www.opengis.net/ont/geosparql#wktLiteral