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

When did Goldbach or wait Landau propose his four conjectural problems?
When did Landau propose his four conjectural problems?

When did Great Britain colonize Australia or rather when did it colonize outside of Australia?
 When did Great Britain colonize outside of Australia?

In the Great Internet Mersenne Prime Search, where no what was the prize for finding a prime with at least 150,000 digits?
In the Great Internet Mersenne Prime Search hat was the prize for finding a prime with at least 150,000 digits?