メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.372531625819 43.7642585442598, 142.372815225935 43.7647850209467, 142.371280341135 43.7652260287822, 142.370985172677 43.7646874845335, 142.370695644366 43.7641592533719, 142.371303051076 43.7639866068263, 142.372214612854 43.7637119550515, 142.372531625819 43.7642585442598)) ^^http://www.opengis.net/ont/geosparql#wktLiteral