メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.63327864542 35.3568884523773, 136.631911341209 35.3569186767592, 136.631915200802 35.3568677777562, 136.631932162069 35.3566940503544, 136.634510107635 35.3564097271071, 136.634479338827 35.3568414940446, 136.63447787295 35.3568618396205, 136.63327864542 35.3568884523773)) ^^http://www.opengis.net/ont/geosparql#wktLiteral