Definition: Given a prompt and two completions from a language model, select the completion that is the most fluent with respect to continuing the prompt. Fluency is defined by coherency and ease of understanding, not necessarily grammatical correctness. Generate either Completion A or Completion B.
Input: Prompt: Sooo the other business units sending emails to IT while 
Completion A: there is work available.  So why hasn't my AU scheme (Show Less): 
Completion B: ignoring the customers.  The emails came in early October, just as the company was starting to get ready for the holiday season.  S
Output:
Completion B