ag-gipp/GoUldI

<math 
  xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="x equals y equals minus one-fourth z squared">
  <semantics>
    <mrow data-semantic-type="relseq" data-semantic-role="equality" data-semantic-id="14" data-semantic-children="0,2,13" data-semantic-content="1,3">
      <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="0" data-semantic-parent="14">x</mi>
      <mo data-semantic-type="relation" data-semantic-role="equality" data-semantic-id="1" data-semantic-parent="14" data-semantic-operator="relseq,=">=</mo>
      <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="2" data-semantic-parent="14">y</mi>
      <mo data-semantic-type="relation" data-semantic-role="equality" data-semantic-id="3" data-semantic-parent="14" data-semantic-operator="relseq,=">=</mo>
      <mrow data-semantic-type="prefixop" data-semantic-role="negative" data-semantic-id="13" data-semantic-children="12" data-semantic-content="4" data-semantic-parent="14">
        <mo data-semantic-type="operator" data-semantic-role="subtraction" data-semantic-id="4" data-semantic-parent="13" data-semantic-operator="prefixop,−">−
          <!-- − -->
        </mo>
        <mrow data-semantic-type="infixop" data-semantic-role="implicit" data-semantic-id="12" data-semantic-children="7,10" data-semantic-content="11" data-semantic-parent="13">
          <mrow class="MJX-TeXAtom-ORD">
            <mstyle displaystyle="false" scriptlevel="0">
              <mfrac data-semantic-type="fraction" data-semantic-role="vulgar" data-semantic-id="7" data-semantic-children="5,6" data-semantic-parent="12">
                <mn data-semantic-type="number" data-semantic-role="integer" data-semantic-font="normal" data-semantic-id="5" data-semantic-parent="7">1</mn>
                <mn data-semantic-type="number" data-semantic-role="integer" data-semantic-font="normal" data-semantic-id="6" data-semantic-parent="7">4</mn>
              </mfrac>
            </mstyle>
          </mrow>
          <mo data-semantic-type="operator" data-semantic-role="multiplication" data-semantic-id="11" data-semantic-parent="12" data-semantic-added="true" data-semantic-operator="infixop,⁢">⁢</mo>
          <msup data-semantic-type="superscript" data-semantic-role="latinletter" data-semantic-id="10" data-semantic-children="8,9" data-semantic-parent="12">
            <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="8" data-semantic-parent="10">z</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn data-semantic-type="number" data-semantic-role="integer" data-semantic-font="normal" data-semantic-id="9" data-semantic-parent="10">2</mn>
            </mrow>
          </msup>
        </mrow>
      </mrow>
    </mrow>
    <annotation encoding="application/x-tex">x=y=-{\tfrac {1}{4}}z^{2}</annotation>
  </semantics>
</math>