data/mathoid/258.mml
<math
xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="normal upper Sigma">
<semantics>
<mi mathvariant="normal" data-semantic-type="identifier" data-semantic-role="greekletter" data-semantic-font="normal" data-semantic-id="0">Σ
<!-- Σ -->
</mi>
<annotation encoding="application/x-tex">\Sigma</annotation>
</semantics>
</math>