Given a prompt and four completions, select the completion that is the most plausible in continuing or answering the prompt. This task is designed to test common sense and has various categories ranging between idioms, negated statements, polysemy, subject referencing, and quantitative reasoning. Generate either Completion A, Completion B, Completion C, or Completion D.

[EX Q]: Prompt: A zebra was drinking water. It 
Completion A: said hi to the fish. 
Completion B: spit water at a giraffe. 
Completion C: finished drinking and walked away. 
Completion D: was best friends with the water.
[EX A]: Completion C

[EX Q]: Prompt: Professor Downey has solved the most difficult NLP problem. He is 
Completion A: sad that it was a difficult problem. 
Completion B: sad that he has solved the difficult problem. 
Completion C: very sad. 
Completion D: happy to have solved it.
[EX A]: Completion D

[EX Q]: Prompt: Employer needs to pay employee. Employee 
Completion A: will be an employer. 
Completion B: will get response by employer. 
Completion C: will get paid. 
Completion D: was not getting paid.
[EX A]:
Completion C