Now follows an overview about the relative pronouns as we have seen them up to now. There are some more, but they cannot be substituted. Therefore, we thought it would be a good idea to have an overview. Even though you will see that it is quite a difficult one. It is meant to give a summary on the possibilities.
Overview
Reference to
1)
a thing or animal
2)
a person
3)
a context
4)
ce, quelque chose, la seule chose, tout,
rien 1)