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: when did emperor culigulias first invade britain?
[EX A]: when did the emperor first invade britain?

[EX Q]: Question: which year did japan join the united nation?
[EX A]: when japan join the united nations?

[EX Q]: Question: what song did michael jackson collaborate with sister janet?
[EX A]:
what songs did michael jackson sing with janet jackson?