メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.136689915801 42.7032906584291, 143.136077064155 42.703608518402, 143.135543064331 42.7038990394472, 143.135489678517 42.7038264451697, 143.134446694609 42.702409674079, 143.135703616353 42.7019183304508, 143.135708285135 42.7019247646835, 143.136649902472 42.7032331542747, 143.136689915801 42.7032906584291)) ^^http://www.opengis.net/ont/geosparql#wktLiteral