Question: Which is an artificial lake, Banjosa Lake or Lake Urmia?
Sentence (from "Lake Urmia"): At its greatest extent, it was the largest lake in the Middle East and the sixth-largest saltwater lake on Earth, with a surface area of approximately 5200 km² , a length of 140 km , a width of 55 km , and a maximum depth of 16 m .
Relevant evidence: No