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

Who is elected using an open ballot or wait who are the two former deputies of Parliament?
The two former deputies of Parliament are whom?

Which no what is Warsaw's symbol?
What is Warsaw's symbol?

Who can or rather what can curtail the risk of occupational injuries in the construction industry?
What can curtail the risk of occupational injuries in the construction industry?