so in practice:

T(they) - Who sold you this drugs?

Y(you) - It was a little gnowe down that little street.

T- Please, do not make jokes with us.

Y- I am not

T - So who was it?

Y - It was him!

T - Who?

Y -I told you already.

T - You told that it was a little gnome down that little street...

Y - Was it not?

....