Task: Wrong Candidate Generation
Input (English): Context: He and his wife bid me good night later ( both a bit tipsy ) as they went to get their seats . I looked later ( very sneakily , as there were cameras around and I was pretty sure something about the whole thing was wrong ) , and he gave me a TWENTY . For two glasses of wine that they did n't even finish !. 
Question: What might I do after receiving the large tip ? 
Correct Answer: I might try to express my thanks to the couple .
Output (English): I might try to hide my thanks to the couple .