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

[Q]: Who decides, or better yet, the Presiding Officer tries the achieve a balance between similar viewpoints and whom?
[A]: The Presiding Officer tries the achieve a balance between similar viewpoints and whom?


[Q]: When did Why did Vilnius become the capital of the Commonwealth?
[A]: Why did Vilnius become the capital of the Commonwealth?


[Q]: What part no What do NK cells protect?
[A]:
What do NK cells protect?