Ambiguity of tawa

I want you to think about the following sentence for a few moments before continuing on. See if you can think of different meanings that it might have.

mi pana e tomo tawa sina.		?

If tawa is used as an adjective, then this sentence says "I gave your car." If it is used as a preposition, though, it could mean, "I gave the house to you." So, how do you tell the difference? You don't! (Insert evil, mocking laugh here.) This is one of those problems inherent in Toki Pona that there is no way to avoid.