Update README.md

README.md

@@ -134,17 +134,14 @@ Please refer to our paper for further details.
 
 ### Dataset Structure
 
-This dataset contains demonstrations of human-assistant conversations which were collected
-on the [open-assistant.io](https://www.open-assistant.io/) website until April, 12 2023.
-
-Conversations are exported as conversation trees with messages as nodes.
-The root node of a conversation tree is called the initial prompt. Each message can have 
-multiple replies. Nodes with more than one reply can have a `rank` field indicating the 
-aggregated user preference (the most preferred message has rank 0).
+This dataset contains message trees which each have an inital prompt message as root which can have
+multiple child messages as replies which itself again can have multiple replies. 
 
 All messages have a role property which can either be "assistant" or "prompter". The roles in 
 conversation threads from prompt to leaf node are stricly alternating between "prompter" and "assistant".
 
+This version of the dataset contains data collected on the [open-assistant.io](https://www.open-assistant.io/) website until April, 12 2023.
+
 ### JSON Example: Message
 
 For readability the following JSON examples are shown formatted with indentation on multiple lines.