Clarify rollout-card evidence type

README.md

@@ -2,8 +2,13 @@
 
 This dataset contains Ergon-native sharded rollout-card exports for the paper artifact.
 
+**Evidence type: Analytic / non-trace export.**
+
+This dataset is not a full rollout trace; it is an Ergon sharded analytic/evidence export for GAP benchmark results.
+
 - Source URL: https://huggingface.co/datasets/acartag7/gap-benchmark/resolve/main/data/results.parquet
 - License: See upstream Hugging Face dataset card
 - Redistribution class: metadata-plus-fetch
 - Card claim class: paper-claim
+- Public evidence class: derived_label_record
 - Reducer paper result ids: rq1.gap.text_safety, rq1.gap.tool_call_safety