SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 3)
    Function tokens (alias tokenized) (children 1)
     ExpressionList (children 2)
      Literal \'abc def\'
      Literal \'ngrams\'
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier tokenized
    Function isConstant (children 1)
     ExpressionList (children 1)
      Identifier tokenized
