Question: Lake Tana and Lake Sary-Chelek, are natural lakes?
Sentence (from "Lake Sary-Chelek"): Sary-Chelek (also Sarychelek, Kyrgyz: Сарычелек) is a mountain lake located in Sary-Chelek Nature Reserve in Jalal-Abad Province in Western Kyrgyzstan.
Relevant evidence: Yes