メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.622310427006 35.363179079956, 136.622157167545 35.3631506434183, 136.621915559328 35.3631058217587, 136.621938569509 35.362776844075, 136.621907328124 35.3618525566567, 136.622178919913 35.3618609639083, 136.622184576917 35.3619404253116, 136.622312562582 35.3619492418622, 136.622310427006 35.363179079956)) ^^http://www.opengis.net/ont/geosparql#wktLiteral