Update README.md

README.md

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   - split: test
     path: data/test-*
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+
+## Event Factuality (It Happened / UDS-IH2)
+
+**Source**
+- Decomp “It Happened” (UDS-IH2): `https://decomp.io/projects/factuality/`
+- UD English-EWT v1.2 (`r1.2`) for sentence reconstruction: `https://github.com/UniversalDependencies/UD_English-EWT/tree/r1.2`
+
+**Task**
+- Binary predicate-level event factuality (one row per predicate).
+
+**Labels**
+- `label`: `0=false`, `1=true`
+- `label_rule`: `single`, `agree`, `na_other`, `tie_conf4_vs0`, `tie_conf4_vs1`, `tie_conf4_vs2`
+
+**Preprocessing**
+- Filter `Keep=True`.
+- Aggregate up to 2 annotations per predicate; resolve ties using `label_rule`; drop unresolved cases.
+
+**Reference**
+- Paper: `https://aclanthology.org/N18-1067/`