International audienceMovima (isolate, Bolivia) has two transitive constructions: direct/ergative andinverse/accusative. The most straightforward argument selector is relativization.Relativization selects the P of the direct and the A of the inverse construction,which, in each case, is the argument whose referent ranks lower on scales of person,animacy, and topicality. In terms of constituency, this is the “external” argument,and it aligns with S. Certain oblique-marked arguments can be relativizedas well, so relativization is a test to distinguish oblique arguments from adjuncts.Other constructions that privilege the external argument are demonstrativefronting and argument incorporation – although the latter is restricted to thedirect cons...