"The Finn is a wizard and the Norwegian person a Viking."
Translation:Suomalainen on velho ja norjalainen viikinki.
It's not needed since it is the same verb. Functions just like in many other languages when you want to avoid repeating yourself.
Koira on ruskea ja kissa (on) musta. (The dog is brown and the cat (is) black.)
Pyry syö pastaa ja Anna (syö) keittoa. (Pyry eats pasta and Anna (eats) soup.)