SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function in (children 1)
     ExpressionList (children 2)
      Literal Tuple_(UInt64_1, UInt64_2)
      Function tuple (children 1)
       ExpressionList (children 2)
        Literal Tuple_(UInt64_1, Tuple_(UInt64_2, UInt64_3))
        Function tuple (children 1)
         ExpressionList (children 2)
          Function plus (children 1)
           ExpressionList (children 2)
            Literal UInt64_1
            Literal UInt64_1
          Literal UInt64_1