Context: creating a test suite for a new GM library.
To what degree are oblique cases supported in the Grammar Matrix, if at all? We can list however many cases we want, but the only thing we are supposed to say about any given verb though is the case of its subject and (direct?) object, is that right?
For example, could I, in principle, model the following phenomenon in Abui using case:
\t A raha hookariang?
\m a raha hoo- kariang
\g 2sg.agt chief 3.goal- work.Ipfv
\p pro n pro- v.goal
\f Are you working for the king?
(By saying there is zero marking or underspecified case on the noun “chief” and that the verb “work” requires some “goal” case on its object?)
But I suspect that this is probably stretching it too far since I doubt this is an obligatory argument. Should I just stick to what is clearly obligatory arguments?..