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

What is negatively correlated to the duration of GDP or make that of economic growth?
What is negatively correlated to the duration of economic growth?

Where did Mongke Khan attack the Song dynasty or rather where did he defend it?
 Where did Mongke Khan defend the Song dynasty?

What antigens are complexed with MHC class I molecules oops present differently than viral antigens?
What antigens present differently than viral antigens?