Joke Collection Website - Bulletin headlines - Owner slogan

Owner slogan

Who should I write here? ?

I'm sure this is just a parenthesis, which has no effect on the sentence.

Might as well take off the brackets and leave: a man, who? It's the owner. He came in. Know that this is an unrestricted attributive clause. Who is the subject of the attributive clause, so fill in who instead of who.

Diligent and curious baby is making progress every day!