ag-gipp/GoUldI

<math 
  xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="upper Y equals beta upper T 8 plus upper I upper X">
  <semantics>
    <mrow data-semantic-type="relseq" data-semantic-role="equality" data-semantic-id="14" data-semantic-children="0,13" data-semantic-content="1">
      <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="0" data-semantic-parent="14">Y</mi>
      <mo data-semantic-type="relation" data-semantic-role="equality" data-semantic-id="1" data-semantic-parent="14" data-semantic-operator="relseq,=">=</mo>
      <mrow data-semantic-type="infixop" data-semantic-role="addition" data-semantic-id="13" data-semantic-children="10,12" data-semantic-content="6" data-semantic-parent="14">
        <mrow data-semantic-type="infixop" data-semantic-role="implicit" data-semantic-id="10" data-semantic-children="2,5" data-semantic-content="9" data-semantic-parent="13">
          <mi data-semantic-type="identifier" data-semantic-role="greekletter" data-semantic-font="italic" data-semantic-id="2" data-semantic-parent="10">β
            <!-- β -->
          </mi>
          <mo data-semantic-type="operator" data-semantic-role="multiplication" data-semantic-id="9" data-semantic-parent="10" data-semantic-added="true" data-semantic-operator="infixop,⁢">⁢</mo>
          <msub data-semantic-type="subscript" data-semantic-role="latinletter" data-semantic-id="5" data-semantic-children="3,4" data-semantic-parent="10">
            <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="3" data-semantic-parent="5">T</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn data-semantic-type="number" data-semantic-role="integer" data-semantic-font="normal" data-semantic-id="4" data-semantic-parent="5">8</mn>
            </mrow>
          </msub>
        </mrow>
        <mo data-semantic-type="operator" data-semantic-role="addition" data-semantic-id="6" data-semantic-parent="13" data-semantic-operator="infixop,+">+</mo>
        <mrow data-semantic-type="infixop" data-semantic-role="implicit" data-semantic-id="12" data-semantic-children="7,8" data-semantic-content="11" data-semantic-parent="13">
          <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="7" data-semantic-parent="12">I</mi>
          <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>
          <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="8" data-semantic-parent="12">X</mi>
        </mrow>
      </mrow>
    </mrow>
    <annotation encoding="application/x-tex">Y=\beta T_{8}+IX</annotation>
  </semantics>
</math>