
A ‘yes’ value to this property indicates that pronominal subjects must be expressed, and further that they must be expressed in the same ‘subject’ position as full NPs. An example of this is English, where a pronoun such as <i>he</i> is obligatory and appears in the same syntactic position as a full NP such as <i>the boy</i>. See Dryer (2008). 

<br><br><b>Reference</b><br>Dryer, Matthew S. 2008. Expression of Pronominal Subjects. In Haspelmath et al. (2008), chapter 101. Available online at <a href="http://wals.info/feature/101">http://wals.info/feature/101</a href>.
