Let's think about BERT pair classification
BERT positional encoding max is 512 tokens.If I have data which is 512 tokens size and make pair of it for making pair similarity check.BERT paper says input would be  [cls] first sequence [sep] second sequence.that means first sequence + second sequence combined should be not over 512.then one sequence would be 256 sequences only.My question is if I have data which is 512 tokens, and wanna make pair similiarity classifierthen what should I do?