Update README.md

README.md

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 ## Dataset Description
 
 - **Repository:** [OASum Dataset repository](https://github.com/tencent-ailab/OASum)
-- **Paper:** [OASum: Large-Scale Open Domain Aspect-based Summarization](https://arxiv.org/pdf/2212.09233.pdf), [Get To The Point: Summarization with Pointer-Generator Networks](https://www.aclweb.org/anthology/K16-1028.pdf)
+- **Paper:** [OASum: Large-Scale Open Domain Aspect-based Summarization](https://arxiv.org/pdf/2212.09233.pdf)
 
 The OASum Dataset is an English-language dataset containing over 3.6M document, aspect, and summary triplets.