Question: In how many governments has the media tycoon who owned Il Giornale in the early 90's serves as Prime Minister of Italy ? 
Sentence (from "La Voce (newspaper)"): It was founded by journalist Indro Montanelli after a disagreement with Silvio Berlusconi, at that time owner of the "Il Giornale" newspaper of which Montanelli had been the founder and editor in chief.
Relevant evidence: Yes