
<!DOCTYPE math
  PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
  <moment/>
  <degree>
    <cn> 3 </cn>
  </degree>
  <momentabout>
    <ci> p </ci>
  </momentabout>
  <ci> X </ci>
</apply>
</math>