AINP Inquiry of Form IMM5406, I dont know where my mother and sister live

[calgarygogo]

Hi

I have a quick question.

My parents divorced when I was 13 years old

And I dont know where they live now...sad

But in form IMM5406, I have to fill in address of their address.

What should I do?

Anybody have same issue like me? or know any solution?