Quote Originally Posted by bublinka View Post
I can use который here, but the sense changes. I can't explain it. It somehow shifts the meaning towards description. ("что живет со мной в одном доме"="живущая со мной в одном доме", but not = "которая живет со мной в одном доме"). Can somebody help me with that?
bublinka I am sure there are many rules but the only way to learn them is if you listen people using them on the difference occasions.
The examples you provided made me also think and reconsider my conlusions. Thank you