メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.179189703951 35.3602050015251, 137.178568969984 35.3600827353613, 137.178817736864 35.3596275726682, 137.17933437438 35.3587786524723, 137.179751816814 35.3590734695859, 137.179425405915 35.3596763180528, 137.179189703951 35.3602050015251)) ^^http://www.opengis.net/ont/geosparql#wktLiteral