Task: Wrong Candidate Generation
Input (English): Context: Ca n't be sure about that , though . One step at a time ... " Andy watched , fascinated , and did n't interrupt again . Castin worked with his laptop battery and the elevator 's wiring , cursing a lot as he went . 
Question: Why is Castin so frustrated that he is reduced to cursing ? 
Correct Answer: Castin is unable to understand the electronics .
Output (English): Castin is unable to fix the clock .