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

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mtable frame="solid" columnlines="solid" rowlines="solid">
    <mlabeledtr>
      <mtd>
        <mtext>1st</mtext> 
      </mtd> 
      <mtd>
        <mfrac>
          <mrow>
            <mi>a</mi> 
            <mo>+</mo> 
            <mn>1</mn> 
          </mrow> 
          <mn>2</mn> 
        </mfrac> 
      </mtd> 
      <mtd>
        <mi>b</mi> 
      </mtd> 
      <mtd>
        <mi>c</mi> 
      </mtd> 
    </mlabeledtr> 
    <mlabeledtr>
      <mtd>
        <mtext>2nd</mtext> 
      </mtd> 
      <mtd>
        <mi>x</mi> 
      </mtd> 
      <mtd>
        <mrow>
          <mfrac>
            <mn>2</mn> 
            <mn>3</mn> 
          </mfrac> 
          <mi>y</mi> 
          <mo>+</mo> 
          <mn>5</mn> 
        </mrow> 
      </mtd> 
      <mtd>
        <mi>z</mi> 
      </mtd> 
    </mlabeledtr> 
    <mlabeledtr>
      <mtd>
        <mtext>3rd</mtext> 
      </mtd> 
      <mtd>
        <mn>1</mn> 
      </mtd> 
      <mtd>
        <mn>2</mn> 
      </mtd> 
      <mtd>
        <mn>5</mn> 
      </mtd> 
    </mlabeledtr> 
  </mtable> </math>
>>> native
[ EArray
    [ AlignCenter , AlignCenter , AlignCenter ]
    [ [ [ EFraction
            NormalFrac
            (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , ENumber "1" ])
            (ENumber "2")
        ]
      , [ EIdentifier "b" ]
      , [ EIdentifier "c" ]
      ]
    , [ [ EIdentifier "x" ]
      , [ EGrouped
            [ EFraction NormalFrac (ENumber "2") (ENumber "3")
            , EIdentifier "y"
            , ESymbol Bin "+"
            , ENumber "5"
            ]
        ]
      , [ EIdentifier "z" ]
      ]
    , [ [ ENumber "1" ] , [ ENumber "2" ] , [ ENumber "5" ] ]
    ]
]