メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.924783692979 35.0780472258749, 136.924623926794 35.0786309646258, 136.923014967548 35.077574024517, 136.923002513846 35.0775847045931, 136.922980890739 35.0775748011033, 136.923330570417 35.0772101928402, 136.923367208883 35.0771238509562, 136.923550739028 35.0765086114835, 136.923593395071 35.0765249653206, 136.924827457027 35.0773633913124, 136.924946170081 35.0774440550713, 136.924783692979 35.0780472258749)) ^^http://www.opengis.net/ont/geosparql#wktLiteral