メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.917264506566 37.8270379875668, 140.91774050439 37.8270305156086, 140.918151504786 37.8270085764909, 140.918370383034 37.8269989627946, 140.918316601671 37.8272290701285, 140.918227378455 37.8273779934589, 140.918107098147 37.8274848264367, 140.917993431541 37.8275281049993, 140.917845071364 37.8275415765369, 140.917726838177 37.8275276004206, 140.917558340439 37.8274627003032, 140.917446365259 37.8273609576565, 140.917264506566 37.8270379875668)) ^^http://www.opengis.net/ont/geosparql#wktLiteral