thanks Ulodesk, I did think about this possibility however I was looking for a more general solution that could use some "grammar semantics" help; because doing what you suggest is very tedious, imagine all the possibilities there are:
jill's
jill'll
dad's
...

I would have to manually add these, PLUS in case I mean "dad's house" for example it would be incorrect. Hence the need for semantic check, and possibly underline with a green wave (or w/e) with it's too ambiguous.