 Person Marking Alignment refers to how person agreement markers on the verb correspond to the types of verbal arguments, such as the subject of transitive clauses, subject of intransitive clauses, and object of transitive clauses. <br><br>A 'yes' value indicate that the language has an 'active' system. That is, the type of agreement marker depends "on a range of semantic factors such as eventhood, performance/effect, instigation, control and significant affectedness" (Siewierska 2008).  <br><br>An example of this is Koasati, where the prefix <i>ca-</i> indicates agreement with a Patient-like argument, while the suffix <i>-li</i> indicates agreement with an Agent-like argument. <br><br><b>Note:</b> Languages which do not exhibit subject and object agreement on the verb will be marked <b>N/A</b> for this value.<br><br><b>Reference</b><br>Siewierska, Anna. 2008. Alignment of Verbal Person Marking. In Haspelmath et al. (2008), chapter 100. Available online at <a href="http://wals.info/feature/100">http://wals.info/feature/100</a href>.