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

Are most vexilligera the same or no um are ctenophores the same or different color?
Are most ctenophores the same or a different color?

When more workers are required, what happens to labor or I mean the job market?
When more workers are required, what happens to the job market?

Who challenged bubonic plague theory I mean who first came up with it?

Who first came up with the bubonic plague theory?