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.
One example is below.
Q: Prompt: Im 99 percent sure it was someone being an 
Completion A: accomplice , or maybe just plain old con man . whatever it was , it 's over . " 
Completion B: asshole, your right?) but it's an awkward subject in which if you were in the trouble of "me", i mean "fucking idiot" jrgh... i dunno...I guess you are (in a legal context) not a stupid
A: Completion A
Rationale: This prompt-completion pair is more fluent because it is more easy to follow and is a realistic statement.
Q: Prompt: Don't judge me, I just hate ratchet-ass bitches. Like that 
Completion A: old saying 'let your neighbor know you will do the same to him if he does.'  That's how it worked. And I'll bet there 
Completion B: guy who wanted to start a game club in my office, who wouldn't just sit in his office, listening to music, and tell me that 
A:
Completion A