revision preference src: The official language of the Tunisian state is Arabic. That language is not the mother tongue of the population or used to communicate between Tunisian people, instead Tunisian plays these roles and is the national language of Tunisia. <SEP> tgt: The official language of the Tunisian state is Arabic. However, that language is not the mother tongue of the population or used to communicate between Tunisian people, instead Tunisian Arabic plays these roles and is the national language of Tunisia.