The foreign-film tag is awful and should be burninated (deleted) and here's why:
- It assumes that everyone is from the same country. "Foreign" just means "anywhere except where I am", and unless you state where exactly that is, there's no real meaning conveyed.
- As most people here speak English, it will eventually be commonly used to mean "Anything except English" (or even, "Anything except Hollywood) which is even less helpful.
The Oscar question could arguably be an exception, though I think it would be better just to have an oscar-foreign-language for questions specifically related to the award should it ever become necessary, or just oscar if not.
If you genuinely don't know what language the film was spoken in the film, that's a good indication that your question lacks "sufficient detail to be answerable".