
<!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">
<semantics>
  <apply>
    <plus/>
    <apply><sin/>
      <ci> x </ci>
    </apply>
    <cn> 5 </cn>
  </apply>
  <annotation encoding="TeX">
    \sin x + 5
  </annotation>
</semantics>
</math>