メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.349573531553 43.1090843333708, 141.350110739138 43.1091577400277, 141.350010623657 43.1095443932929, 141.350023189655 43.1095514537115, 141.349886702106 43.1100554810741, 141.349902441407 43.1100556041835, 141.349777818819 43.110503180539, 141.349228230746 43.1104158941358, 141.348675377061 43.1103354702047, 141.348776178153 43.1099026167688, 141.348994055327 43.1090002549034, 141.349573531553 43.1090843333708)) ^^http://www.opengis.net/ont/geosparql#wktLiteral