a>, <a href="http://www.surdeanu.info/mihai/teaching/ista555-fall13/readings/PennTreebankConstituents.html#SINV">SINV</a>, or  
<a href="http://www.surdeanu.info/mihai/teaching/ista555-fall13/readings/PennTreebankConstituents.html#SQ">SQ</a>.<br>


<a name="-HLN">
<b>-HLN (headline)</b> - marks headlines and datelines.  Note that headlines and datelines always constitute a unit of text that is  
structurally independent from the following sentence.<br>
</a>

<a name="-TTL">
<b>-TTL (title)</b> - is attached