SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Literal Tuple_(\'408\', \'420\') (alias some_tuple)
   ExpressionList (children 1)
    Function in (alias flag) (children 1)
     ExpressionList (children 2)
      Literal \'408\'
      Identifier some_tuple
