"Who is he?"

In today's lesson you will learn how to ask a question in Polish "Who is he?" 

Kim on jest? On jest kucharzem.

Kim on jest?
Who is he?

On jest kelnerem.
He's a waiter.

Kim ona jest?
Who is she?

She's a teacher.
Ona jest nauczycielką.

On jest kucharzem. 
He's a cook. 

Ona jest piosenkarką.
She's a singer.