I've read Preferred way to apostrophise in case of dual or multiple ownership by distinct entities and "Nikki's and Alice's X" vs. "Nikki and Alice's X", but my question is a little different. Not sure if the title is correctly chosen or not.
So the question is, if something belongs to a person, whose name I don't know for example, then I would say:
- It's my uncle's sister's nephew's object
- It's my uncle sister nephew's object
I suppose the first one would be correct, but it looks strange. Can anyone point to a rule that specifically states how to deal with the possessive apostrophe in those situations?