Given a question, generate a paraphrase of that question wihout changing the meaning of it. Your answer should reword the given sentence, but not add information to it or remove information from it. The answer to your question should be the same as the answer to the original question.

[EX Q]: Question: what is the capital city of the african nation cameroon?
[EX A]: what capital city of the african nation of cameroon?

[EX Q]: Question: who became president in 1989 of south africa?
[EX A]: who was the president of south africa in 1989?

[EX Q]: Question: what layer of earth is the coolest?
[EX A]:
what is the layer with the coolest temperature?