Update README.md

README.md

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 # Wikidata5M-KG
 
-This directory provides the knowledge graph data used in the paper  
-**[KG-Infused RAG: Augmenting Corpus-Based RAG with External Knowledge Graphs](https://arxiv.org/abs/2506.09542)**.
+Wikidata5M-KG is an open-domain knowledge graph constructed from Wikipedia and Wikidata. It contains approximately **4.6 million entities** and **21 million triples**. Wikidata5M-KG is built based on the [Wikidata5M](https://deepgraphlearning.github.io/project/wikidata5m) dataset.
 
 ## 📦 Contents
 
@@ -35,7 +34,7 @@ After extraction, it yields a single file: `wikidata5m_kg.jsonl`, each line is a
 ### `wikidata5m_raw_data.tar.gz`
 
 This archive contains the original raw files used to construct `wikidata5m_kg.jsonl`.  
-The data is derived from the [Wikidata5M project](https://deepgraphlearning.github.io/project/wikidata5m). For detailed descriptions of the files and their meanings, please refer to the [original project documentation](https://deepgraphlearning.github.io/project/wikidata5m).
+The data is derived from the Wikidata5M dataset. For detailed descriptions of the files and their meanings, please refer to the [original project documentation](https://deepgraphlearning.github.io/project/wikidata5m).
 
 ## 🔗 References