メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.913479583183 35.4972146655726, 136.912560790955 35.4973055480061, 136.912518521984 35.4967682269267, 136.912460250152 35.4962673136966, 136.912401619785 35.4957709064986, 136.912290331289 35.4949199653621, 136.912141338883 35.4936360920186, 136.91277672601 35.4936759519719, 136.912841721661 35.4936883413097, 136.913220863589 35.4937980449039, 136.913201125901 35.4950851848527, 136.913479583183 35.4972146655726)) ^^http://www.opengis.net/ont/geosparql#wktLiteral