Update README.md

README.md

@@ -29,4 +29,14 @@ size_categories:
 
 Thai Literature Corpora (TLC): Corpora of machine-ingestible Thai classical literature texts by Jitkapat Sawatphol (Faculty of Arts, Chulalongkorn University).
 
-This project use [Thai Literature Corpora (TLC) v2.0](https://attapol.github.io/tlc.html). All text are from old Thai book that out of copyright (or public domain).
+This project use [Thai Literature Corpora (TLC) v2.0](https://attapol.github.io/tlc.html). All text are from old Thai book that out of copyright (or public domain).
+
+This dataset was build for [Open Assistant](https://github.com/LAION-AI/Open-Assistant/).
+
+## Columns
+
+The dataset was following columns:
+
+1. **TEXT** (string)
+2. **SOURCE** (string)
+3. **METADATA** (JSON string, optional)