Add M2E2 (text) EE+NER dataset — text_only subset, 6013 test records

README.md

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+---
+features:
+  - name: input
+    dtype: string
+  - name: output
+    dtype: json
+  - name: schema
+    list:
+      - name: label
+        dtype: string
+      - name: description
+        dtype: string
+configs:
+  - config_name: default
+    data_files:
+      - split: test
+        path: data/m2e2_test.jsonl
+---

m2e2_label_summary.md

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+# M2E2 (text) — label summary
+
+Counts computed from `processed_data/m2e2/test.jsonl` (6013 records, single `test` split;
+source = `text_only_event.json`). Scope caveat: this is the `text_only` subset = **85% of
+the paper's 1297 text events** (the 192 image-grounded events in `text_multimedia` are
+excluded, matching TextEE). Use as **eval-only**; absence of an event is not ground truth.
+
+## Event types — 8 (1105 event mentions)
+
+| Event type | Count |
+|---|---:|
+| Conflict:Attack | 302 |
+| Movement:Transport | 229 |
+| Life:Die | 176 |
+| Justice:Arrest-Jail | 121 |
+| Contact:Meet | 104 |
+| Conflict:Demonstrate | 98 |
+| Contact:Phone-Write | 43 |
+| Transaction:Transfer-Money | 32 |
+| **Total** | **1105** |
+
+## Entity types — 8 (21569 entity mentions)
+
+| Entity type | Count |
+|---|---:|
+| GPE | 7307 |
+| PER | 7011 |
+| ORG | 4602 |
+| LOC | 1321 |
+| FAC | 716 |
+| VEH | 300 |
+| WEA | 279 |
+| VALUE | 33 |
+| **Total** | **21569** |
+
+## Argument roles — 15 (1659 argument instances)
+
+| Role | Count |
+|---|---:|
+| Place | 384 |
+| Entity | 190 |
+| Attacker | 166 |
+| Target | 152 |
+| Artifact | 136 |
+| Victim | 133 |
+| Destination | 123 |
+| Agent | 121 |
+| Origin | 78 |
+| Person | 72 |
+| Instrument | 36 |
+| Giver | 23 |
+| Recipient | 21 |
+| Vehicle | 21 |
+| Police | 3 |
+| **Total** | **1659** |
+
+## Totals at a glance
+
+| Item | Value |
+|---|---:|
+| Records (sentences) | 6013 |
+| — with ≥1 event | 932 |
+| — empty (no event) | 5081 |
+| Event mentions | 1105 |
+| Event types | 8 |
+| Argument instances | 1659 |
+| Argument roles | 15 |
+| Entity mentions | 21569 |
+| Entity types | 8 |
+
+---
+
+# Definitions
+
+Source note: the M2E2 paper (Li et al., ACL 2020) does **not** restate definitions — it
+adopts the **ACE 2005 annotation guidelines (Walker et al. 2006)** and selects the 8 event
+types as the complete intersection of ACE and imSitu (the visually depictable subset). The
+definitions below paraphrase ACE 2005; the **Roles** column lists the argument roles that
+actually occur for that type **in this shipped `text_only` data** (the paper's Table 1
+ontology allows a few more, e.g. `Instrument` on several types; `Participant` is the
+ontology name for what the data labels `Entity` on Contact:Meet).
+
+## Event types
+
+| Event type | Definition (per ACE 2005, as adopted by M2E2) | Roles present in data |
+|---|---|---|
+| **Conflict:Attack** | A violent physical act intended to cause physical harm or damage to a target — any attack not covered by a more specific type (shootings, bombings, air strikes, etc.). | Attacker, Target, Place, Instrument |
+| **Movement:Transport** | A person or artifact (vehicle/weapon) is moved from one place (origin) to another (destination). | Artifact, Destination, Origin, Agent, Vehicle |
+| **Life:Die** | The life of a person ends — accidental, intentional, or self-inflicted. | Victim, Place, Agent, Instrument |
+| **Justice:Arrest-Jail** | A person's freedom of movement is restricted by a state actor (police/government) — being arrested or held in custody/jail. | Person, Place, Agent |
+| **Contact:Meet** | Two or more entities come together at a single location and interact **face-to-face** (talks, summits, visits). | Entity (= ontology "Participant"), Place |
+| **Conflict:Demonstrate** | A large number of people gather in a public place to protest or demand official action (protests, rallies, strikes, riots). | Place, Entity, Police |
+| **Contact:Phone-Write** | Two or more parties communicate **not** face-to-face — by telephone or written/electronic correspondence. | Entity, Place |
+| **Transaction:Transfer-Money** | Giving, receiving, lending, or borrowing money, **not** as payment for goods/services. | Giver, Recipient |
+
+## Entity types
+
+| Entity type | Definition (per ACE 2005, as adopted by M2E2) | Examples in data |
+|---|---|---|
+| **PER** (Person) | A human, whether a single individual or a group of people. | `Morsi`, `supporters`, `police forces` |
+| **GPE** (Geo-Political Entity) | A composite entity of population + government + physical territory: a nation, state, province, county, or city. | `U.S.`, `Syrian`, `Baton Rouge` |
+| **ORG** (Organization) | A group of people defined by a formal organizational structure — corporations, agencies, institutions. | `police`, `Nation of Islam`, `IS` |
+| **LOC** (Location) | A geographical/natural place defined by physical features, **not** a GPE — regions, land masses, bodies of water. | `West African region`, `Europe`, `Algerian desert` |
+| **FAC** (Facility) | A man-made permanent structure or real-estate improvement — buildings, airports, refineries, jails. | `mosque`, `hospital`, `jail` |
+| **VEH** (Vehicle) | A physical device designed to move/carry people or objects between locations. | `car`, `vessels`, `flight` |
+| **WEA** (Weapon) | A physical device primarily used as an instrument to harm or destroy. | `bullets`, `weapons` |
+| **VALUE** | An ACE non-entity quantity; in this data it is almost entirely monetary amounts and percentages. | `$210 million`, `51 percent stake`, `$1 billion` |