<?xml version="1.0" encoding="UTF-8"?>

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <ms>dog</ms> 
    <mo>+</mo> 
    <ms fontweight="bold" fontstyle="normal">cat</ms> 
    <mo>+</mo> 
    <ms fontweight="normal" fontstyle="normal">pig</ms> 
    <mo>+</mo> 
    <ms fontfamily="Helvetica" color="#00ff00">fish</ms> 
    <mo>+</mo> 
    <ms fontsize="36pt">&#x03BA;&#x03B1;&#x03C4;</ms> 
    <mo>+</mo> 
    <ms fontweight="bold" fontstyle="normal">goat</ms> 
  </mrow> </math>