Task: Wrong Candidate Generation
Input (English): Context: Maybe going cycling with wai chong they all on monday morning den go work at night . Maybe lah cos i actually working the whole day . Tml start work at 11 am . End of the month liao . 
Question: Why did n't they want to go riding in Wai Chong ? 
Correct Answer: They had to work the night before .
Output (English): Their friends could n't go and they did n't want to go by themselves .