メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.118318679597 39.3526094123603, 141.117565507445 39.3527379358229, 141.11712488817 39.3528129093089, 141.116410018533 39.3528086014945, 141.115728853611 39.3513273605383, 141.117691510836 39.3513706361196, 141.117825515216 39.3513509546128, 141.118011801104 39.3513264289641, 141.118410941288 39.3512737929129, 141.118318679597 39.3526094123603)) ^^http://www.opengis.net/ont/geosparql#wktLiteral