The case prototypically assigned to the theme argument of the main verb in simple clauses in the active voice. This case can also be assigned to the subject of a complementive, or to subject of an infinitival clause in so-called AcI-constructions. Noun phrases marked with accusative case are often referred to as direct objects. German has a set of prepositions that assign accusative case to their nominal complement; this may also be the case in Dutch but it is hard to establish due to the fact that accusative case is not morphologically distinct from dative case in Dutch.