Update README.md

README.md

@@ -13,6 +13,15 @@ size_categories:
 This is a Japanese question answereing dataset with retrieval on Wikipedia articles
 by trained human workers.
 
+## Contributors
+
+## Corresponding author
+
+* [Yusuke Oda](https://github.com/odashi)
+  Defined the dataset specification, data structure, and the scheme of data collection.
+* [Baobab, Inc.](https://baobab-trees.com/en)
+  Operated data collection, data checking, and formatting.
+
 ## About the dataset
 
 Each entry represents a single QA session:
@@ -187,8 +196,4 @@ Example ("answered" data ID=1):
         }
     ]
 }
-```
-
-## Corresponding author
-
-* Yusuke Oda (@odashi on GitHub)
+```