who made
Je ne vous dirai pas qui a fait cela.
I won't tell you who did this.
Who did all this?
Nous allons découvrir qui a fait cela.
We’re going to find out who did this.
Who made this box?
Who volunteered?
Il est raisonnable de considérer que c'est Tom qui a fait cela.
It is reasonable to assume that Tom was the one who did it.