Translation of "Argentinian" in French

Joaquin is an argentinian.

Joaquín est argentin.

You can get an Argentinian roastbeaf everywhere,

Vous pouvez obtenir un roastbeaf argentin partout,

I didn't know that you were Argentinian.

Je ne savais pas que vous étiez argentin.

During my childhood, I felt very much Argentinian,

Pendant mon enfance, je me sentais très argentine,