Task: Question Generation
Input (English): Context: It should be interesting . Niels was supposed to come to Metro , but I do n't think he did unless he had come and gone by the time I got there . I did n't work today , but left my car there and walked to campus . If he did n't come today than maybe he 'll be there tomorrow or Friday .
Output (English): What 's a possible reason the writer did n't work today ?