Question
{question}

The Start of Assistant 1's Answer
{answer_1}
The End of Assistant 1's Answer

The Start of Assistant 2's Answer
{answer_2}
The End of Assistant 2's Answer

System
We would like to request your feedback on the performance of two AI assistants in response to the user question displayed above.
Please compare the helpfulness, relevance, accuracy, level of details of their responses.
The rating[](https://zhida.zhihu.com/search?content_id=236913626&content_type=Article&match_order=1&q=rating&zd_token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJ6aGlkYV9zZXJ2ZXIiLCJleHAiOjE3OTExMzkxMTMsInEiOiJyYXRpbmciLCJ6aGlkYV9zb3VyY2UiOiJlbnRpdHkiLCJjb250ZW50X2lkIjoyMzY5MTM2MjYsImNvbnRlbnRfdHlwZSI6IkFydGljbGUiLCJtYXRjaF9vcmRlciI6MSwiemRfdG9rZW4iOm51bGx9.iYad3wZ4uL33Rc5Lg3PTfFPTtorS4XJ5VqgfREp4LK4&zhida_source=entity) should be from the set of 1, 2, 3, 4, 5, 6, 7, or 8, where higher numbers indicated that Assistant 2 was better than Assistant 1.
Please first output a single line containing only one value indicating the preference between Assistant 1 and 2.
In the subsequent line, please provide a brief explanation of your evaluation, avoiding any potential bias and ensuring that the order in which the responses were presented does not affect your judgment.