Comparing three subjects with one verb form

A Malayalam grammar exercise supplies “അവൻ വന്നു,” “അവൾ വന്നു” and “അവർ വന്നു.” A learner who also studies Tamil expects the final verb to acquire three different person, number or gender endings and marks two examples incorrect solely because all three contain വന്നു. Another learner assumes that the unchanged verb means the pronouns have identical reference. Neither conclusion follows from standard Malayalam usage. The task asks what changes, what remains constant and how the examples demonstrate a language-specific grammatical pattern. It does not ask for every possible historical or dialectal exception. The aim is to interpret the supplied ordinary clauses without treating a rule from a related Dravidian language as compulsory in Malayalam.