メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.31875651064 43.0686795864993, 141.318712948016 43.0688830446782, 141.318603106147 43.0693458298298, 141.31853866156 43.0696614352259, 141.318521985469 43.0697428111547, 141.318439305227 43.0700399819446, 141.317941924404 43.0701789805983, 141.317267066822 43.0703628778289, 141.316934027029 43.069773124932, 141.316636823063 43.0692244539595, 141.317293729001 43.0689586923353, 141.317914010662 43.0687040222141, 141.318003910939 43.0686671122789, 141.318240366644 43.0685700312614, 141.318348571972 43.0685256210409, 141.318830623113 43.0683338900201, 141.31875651064 43.0686795864993)) ^^http://www.opengis.net/ont/geosparql#wktLiteral