Update README.md

Correct the description part of "Mention Type"

README.md

@@ -27,7 +27,7 @@ The above data archive mainly contains the following resource files:
 
 - **Dataset**: One in-domain dataset (AIDA-CoNLL) and Five cross-domain datasets (MSNBC / AQUAINT / ACE2004 / CWEB / WIKI). And these datasets share the same data format.
 
-- **Type Embedding**: Adopted to compute type similarity between mention-entity pairs. We trained these type embedding using a typing system called [NFETC](https://arxiv.org/abs/1803.03378) model.
+- **Mention Type**: Adopted to compute type similarity between mention-entity pairs. We predict types for each mention in datasets using a typing system called [NFETC](https://arxiv.org/abs/1803.03378) model trained by the AIDA dataset.
 
 - **Wikipedia inLinks**: Surface names of inlinks for a Wikipedia page (entity) are used to construct **dynamic context** in our model learning process.