メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.333003721498 43.748986309329, 142.33254915948 43.7497221063924, 142.332040554871 43.7495677283119, 142.331323052182 43.7494520640196, 142.330584715516 43.7491522754665, 142.331681165556 43.7485644284074, 142.332729992618 43.7480173585258, 142.333427433464 43.7482345715897, 142.333003721498 43.748986309329)) ^^http://www.opengis.net/ont/geosparql#wktLiteral