Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
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
Solution: Completion A
Reason: This prompt-completion pair is more fluent because it is more easy to follow and is a realistic statement.

Now, solve this instance: Prompt: Thanks for the small flat rate priority boxes. I'll remember to use 
Completion A: one for each order and they are great choices for a few months. So a flat rate package? We'll let you know the next time you receive 
Completion B: those for the other priority boxes. I'll also do the "first letter of the alphabet" priority. I've also put together my preferred priority bo
Student:
Completion A