メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.369407505456 43.0837532105911, 141.369341917848 43.0839641847848, 141.369166658778 43.0846701326774, 141.368791369721 43.084618295256, 141.367632627926 43.0844672348549, 141.367725318615 43.0840731226545, 141.367725402589 43.084072834335, 141.367781030906 43.0838819067828, 141.367912506318 43.0833126237996, 141.368229748816 43.0833569843812, 141.368679712453 43.0834198768668, 141.36945688956 43.0835344455233, 141.369407505456 43.0837532105911)) ^^http://www.opengis.net/ont/geosparql#wktLiteral