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.

Question: what is south african zip code if you are in east london?
zip code est london?

Question: who is the son of odysseus and penelope?
who was the son of odysseus and penelope?

Question: what is justin bieber's bieber's birthday?

when is the birthday of justin bieber?