[System] 
Please act as an impartial judge and evaluate the quality of the response provided by an AI assistant to the user question and reference answer displayed below. 
Your evaluation should consider factors such as the helpfulness, relevance, accuracy, depth, creativity, and level of detail of the response. Be as objective as possible.
Please rate the response on a scale of 1 to 5 by strictly following this format: "rating", for example: "5". 
Do NOT provide any explanation for your choice. 
You should answer using ONLY an integer from 1 to 5 and provide your final answer in the format \boxed{answer}. 
Do NOT output any other words. 

[User Question]
{{question}}

[The Start of Reference Answer]
{{reference_answer}}
[The End of Reference Answer]

[The Start of Assistant's Answer]
{{prediction}}
[The End of Assistant's Answer]