Update README.md

README.md

@@ -69,6 +69,20 @@ The released files contain IDs, metadata, rules, cluster labels, answer
 options, and `[NEEDS_HYDRATION]` placeholders. Reddit text and media are not
 redistributed directly.
 
+## At a glance
+
+| Split | Instances | Comments | Images | Subreddits / Clusters | Rules / Clusters | Languages |
+|---|---:|---:|---:|---:|---:|---:|
+| Train | 9,155 | 51,968 | 2,077 | 861 / 25 | 1,336 / 27 | 9 |
+| Val   | 1,382 |  7,631 |   376 | 537 / 25 |   586 / 27 | 9 |
+| Test  | 2,834 | 13,076 | 1,190 | **1,989 / 25** | 2,039 / 27 | 9 |
+| **Total** | **13,371** | **72,675** | **3,643** | **1,989 / 25** | **2,885 / 27** | **9** |
+
+Every instance contains (a) a root-to-leaf discussion thread where a
+moderator cited a rule on the leaf comment, (b) a compliant sibling thread
+from the same submission, (c) the submission itself with any images, and
+(d) the subreddit's full rule set.
+
 ## Coverage
 
 <p align="center">