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README.md

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-Data used for training and validation of models in the paper Breaking reCAPTCHAv2 (https://arxiv.org/abs/2409.08831).
+Data used for training and validation of models in the paper [Breaking reCAPTCHAv2](https://arxiv.org/abs/2409.08831).
 
-The code can be accessed on GitHub[https://github.com/aplesner/Breaking-reCAPTCHAv2]
+The code can be accessed on [GitHub](https://github.com/aplesner/Breaking-reCAPTCHAv2).