Optimal Case Assignment

Notoriously, there happen to exist languages in which subjects of intransitive verbs bear the same case as objects of transitive verbs, the so-called ergative languages. In nominative/accusative languages, on the other hand, subjects of intransitives bear the same case as subjects of transitives. Thirdly, in split-ergative languages, some subjects of intransitive verbs bear the same case as subjects of transitives, others bear the same case as objects of transitives. An example of the case distribution in an ergative language is given below: