 Level
</h3>
</a>

<p>
<a name="S">
<b>S</b> - simple declarative clause, i.e. one that is not introduced by a (possible empty) subordinating conjunction or a  
<i>wh</i>-word and that does not exhibit subject-verb inversion.<br>
</a>

<a name="SBAR">
<b>SBAR</b> - Clause introduced by a (possibly empty) subordinating conjunction.<br>
</a>

<a name="SBARQ">
<b>SBARQ</b> - Direct question introduced by a <i>wh</i>-word or a <i>wh</i>-phrase.  Indirect questions and relative  
clauses should be bracketed as S