Inversion with a noun as subject

If the subject of a clause is a noun, then the construction of the inversion is a bit more complicated.
The noun itself stays at the beginning, then comes the conjugated verb and an additional pronoun is added to it. This way a backward-reference to the noun is made.

Pierre a perdu son argent. => Pierre a-t-il perdu son argent?
  Pierre has lost his money. => Pierre, has he lost his money?  
  Le président a dit des bêtises. => Le président a-t-il dit des bêtises?
  The president said nonsense. => The president, did he say nonsense?  

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