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

[EX Q]: Which is no what is one of the largest and most modern oncological institutions in Europe?
[EX A]: What is one of the largest and most modern oncological institutions in Europe?

[EX Q]: How many er which plateau is the left part of Vistula on?
[EX A]: Which plateau is the left part of Vistula on?

[EX Q]: When did the Treaty of Versailles no the Germany army enter Rhineland?
[EX A]:
When did the Germany army enter Rhineland?