今天借到I-483补充材料通知，有一项不太明白，请各位大侠指点。
鄙人的I-140是NIW，2005年APPROVED。下面是补充材料内容：
Your I-485 application and the accompanying evidence indicate that your Form I-140, Immigration Petition for Alien Worker, was accepted on 2005. Therefore, the Form I-140 was filed after the cut-off date of April 30, 2001. This office is unable to process your application without the following information:
Please submit evidence that you were the beneficiary of a petition which was properly filed with the Service on or before April 30, 2001 or that you were the beneficiary of a Labor Certification that was properly filed pursuant to the regulations of the Secretary of Labor on or before April 30,2001, and which was approvable when filed [see 8CFR245.10(a)(1)(i)(A)and (B)].
这究竟要补什么样的材料？先谢了。