SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function naiveBayesClassifier (children 1)
     ExpressionList (children 2)
      Literal \'lang_codepoint_1\'
      Literal \'她每天早上喝一杯绿茶\'
