SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function round (children 1)
     ExpressionList (children 1)
      Function multiply (children 1)
       ExpressionList (children 2)
        Literal UInt64_1000
        Function ngramDistance (children 1)
         ExpressionList (children 2)
          Literal \'abcdefgh\'
          Literal \'defgh\'