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README.md

@@ -87,13 +87,7 @@ Each line in `metadata.jsonl` has the following structure:
 
 ## Source Licenses
 
-The `uri` field links to the original Stack Exchange answer. The `license` field records the corresponding CC BY-SA version based on the source contribution's `date` in DaTikZ-v2:
-
-- Before April 8, 2011 (UTC): `CC-BY-SA-2.5`.
-- From April 8, 2011 up to, but not including, May 2, 2018 (UTC): `CC-BY-SA-3.0`.
-- On or after May 2, 2018 (UTC): `CC-BY-SA-4.0`.
-
-See the [Stack Exchange licensing policy](https://stackoverflow.com/help/licensing) for details. This assignment uses the DaTikZ-v2 date; individual post revisions have not been checked.
+The data is licensed under **Creative Commons Attribution-ShareAlike (CC BY-SA)**. The applicable license version for each sample is recorded in its `license` field, following the [Stack Exchange licensing policy](https://stackoverflow.com/help/licensing).
 
 ## Citation