Update README.md

README.md

@@ -24,7 +24,7 @@ configs:
 ---
 # PolyBench
 
-PolyBench is a comprehensive GraphRAG benchmark to facilitate the evaluation of relevant methods on diverse question patterns.
+PolyBench is a comprehensive benchmark to facilitate the evaluation of relevant methods on diverse question patterns for augmenting large language models with external knowledge graphs.
 
 ## Dataset Details
 
@@ -58,7 +58,7 @@ Use the question set from each domain:
 
 ```
 from datasets import load_dataset
-domain = "amazon" # can be selected from [amazon, physics, goodreads]
+domain = "physics" # can be selected from [physics (academia), goodreads (literature), amazon (e-commerce)]
 dataset = load_dataset("Liu-rj/PolyBench", domain, split="test")
 ```