メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.990436899632 34.9034441740388, 136.988942291531 34.9038387227421, 136.988446953875 34.9039699105684, 136.987622649857 34.9041766756738, 136.987454341429 34.9034338286151, 136.987332019874 34.9028938833307, 136.987254300605 34.9025508513202, 136.987859249643 34.9024086317949, 136.988317605706 34.9022916901768, 136.989007677382 34.902073527225, 136.989731103418 34.9018118133371, 136.990436899632 34.9034441740388)) ^^http://www.opengis.net/ont/geosparql#wktLiteral