A ‘yes’ value indicates that there is a word which means 'finished,' but can also be used to mark perfect aspect. Non-standard English ‘done’ is an example, as in <i>He done ate 50 pizzas.</i> See Dahl & Velupillai (2008).

<br><br><b>Reference</b><br>
Dahl, Östen & Velupillai, Viveka. 2008. The Perfect.
In Haspelmath et al. (2008), chapter 68.
Available online at <a href="http://wals.info/feature/68">http://wals.info/feature/68</a href>. 
Accessed on 2008-11-18.