Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

When did What centuries did the Roman times take place within?
What centuries did the Roman times take place within?

When did the no in what year did the Black Death originate in Central Asia?
In what year did the Black Death originate in Central Asia?

Who was the first no the third of Kublai's Chinese advisers?
Who was the third of Kublai's Chinese advisers?