メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.883333971498 35.2417689878294, 136.883335288377 35.24185237274, 136.883055539697 35.2418401645818, 136.880707958599 35.2416591901572, 136.88068414692 35.2416569503877, 136.880625839077 35.2374606049114, 136.883269761796 35.2374448120882, 136.88327265841 35.2378743337973, 136.883333971498 35.2417689878294)) ^^http://www.opengis.net/ont/geosparql#wktLiteral