メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.659364984603 42.816772907823, 143.658543457127 42.8168390057417, 143.658183791431 42.8168653050933, 143.657770947148 42.8168972502224, 143.657766940451 42.816842722706, 143.657492155278 42.8148597459326, 143.65765522777 42.814847190384, 143.658275087094 42.8147903332098, 143.658422471528 42.8147768443255, 143.659067484185 42.8147214316417, 143.659364669235 42.8167168585316, 143.659364984603 42.816772907823)) ^^http://www.opengis.net/ont/geosparql#wktLiteral