メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.771502143831 35.4148763500678, 136.771481295025 35.4151215174227, 136.771462964408 35.4153526459795, 136.770203659605 35.4153223246445, 136.770221333565 35.4148829636723, 136.770222246717 35.41469614303, 136.770234748379 35.4143823235155, 136.771509161962 35.4144336439812, 136.771508245431 35.4146217669471, 136.771502143831 35.4148763500678)) ^^http://www.opengis.net/ont/geosparql#wktLiteral