Die Nase ist das bei Wirbeltieren meist mittig im Gesichtsfeld angelegte Riechorgan, d(as) bei Mensch wie Tier häufig auch Teil des Atmunsapparats ist.
The bracketted part was deleted, and I am expected to fill it in. I wrote "ie" , since I thought it was referring "die Nase" but it isn't.
I believe it is referring Riechorgan. But why? Why that instead of nose?