11th ACR
E91088
The 11th ACR is a U.S. Army armored cavalry regiment renowned for its reconnaissance and security roles, notably during the Vietnam War and as the principal opposing force unit at the National Training Center.
All labels observed (3)
| Label | Occurrences |
|---|---|
| 11th ACR canonical | 5 |
| 1/11 ACR | 1 |
| HHT, 11th ACR | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T773735 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 11th ACR Context triple: [11th Armored Cavalry Regiment, abbreviation, 11th ACR]
-
A.
AACR2
AACR2 (Anglo-American Cataloguing Rules, Second Edition) is a widely used library cataloging standard that provides rules for describing and accessing library materials in online and card catalogs.
-
B.
ACC-17
ACC-17 is the 17th plenary meeting of the Anglican Consultative Council, a global gathering of Anglican representatives to discuss and coordinate the mission and governance of the Anglican Communion.
-
C.
ACS Fall National Meeting
The ACS Fall National Meeting is a major annual scientific conference that brings together chemists and researchers from around the world to present new findings, network, and discuss advances across all areas of chemistry.
-
D.
ACS Spring National Meeting
The ACS Spring National Meeting is a major annual scientific conference that brings together chemists and related professionals to present research, network, and discuss advances across the chemical sciences.
-
E.
AAPT Winter Meeting
The AAPT Winter Meeting is a major annual conference that brings together physics educators, researchers, and students to share teaching practices, resources, and developments in physics education.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: 11th ACR Target entity description: The 11th ACR is a U.S. Army armored cavalry regiment renowned for its reconnaissance and security roles, notably during the Vietnam War and as the principal opposing force unit at the National Training Center.
-
A.
AACR2
AACR2 (Anglo-American Cataloguing Rules, Second Edition) is a widely used library cataloging standard that provides rules for describing and accessing library materials in online and card catalogs.
-
B.
ACC-17
ACC-17 is the 17th plenary meeting of the Anglican Consultative Council, a global gathering of Anglican representatives to discuss and coordinate the mission and governance of the Anglican Communion.
-
C.
ACS Fall National Meeting
The ACS Fall National Meeting is a major annual scientific conference that brings together chemists and researchers from around the world to present new findings, network, and discuss advances across all areas of chemistry.
-
D.
ACS Spring National Meeting
The ACS Spring National Meeting is a major annual scientific conference that brings together chemists and related professionals to present research, network, and discuss advances across the chemical sciences.
-
E.
AAPT Winter Meeting
The AAPT Winter Meeting is a major annual conference that brings together physics educators, researchers, and students to share teaching practices, resources, and developments in physics education.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. Army unit
ⓘ
armored cavalry regiment ⓘ |
| abbreviation | 11th ACR self-linksurface differs ⓘ |
| allegiance |
United States of America
ⓘ
surface form:
United States
|
| basedAt |
Fort Irwin National Training Center
ⓘ
surface form:
National Training Center
|
| branch | United States Army ⓘ |
| color |
black
ⓘ
yellow ⓘ |
| conflict |
Cold War
ⓘ
Operation Enduring Freedom ⓘ Operation Iraqi Freedom ⓘ Vietnam War ⓘ World War II ⓘ |
| country | United States of America ⓘ |
| dateFormed | 1901 ⓘ |
| equipmentType |
armored fighting vehicles
ⓘ
armored personnel carriers ⓘ tanks ⓘ |
| formedAs |
11th Armored Cavalry Regiment
ⓘ
surface form:
11th Cavalry Regiment
|
| garrison |
Fort Irwin National Training Center
ⓘ
surface form:
Fort Irwin, California
|
| hasBattleHonors |
Afghanistan
ⓘ
Iraq ⓘ Viet Nam ⓘ
surface form:
Vietnam
|
| hasCapability |
armored reconnaissance
ⓘ
combined arms maneuver ⓘ mobile security operations ⓘ |
| hasSubunitType |
squadron
ⓘ
troop ⓘ |
| hasTradition | cavalry heritage ⓘ |
| insignia | Black horse on yellow shield ⓘ |
| motto | Allons ⓘ |
| nickname |
11th ACR
self-linksurface differs
ⓘ
Blackhorse Regiment ⓘ |
| notableFor |
cavalry screening and covering force missions
ⓘ
highly realistic opposing force tactics at Fort Irwin ⓘ reconnaissance and security operations in the Vietnam War ⓘ serving as dedicated opposing force at U.S. Army National Training Center ⓘ |
| partOf | United States Army Armor Branch ⓘ |
| primaryMission | train U.S. and allied units through realistic force-on-force exercises ⓘ |
| role |
armored cavalry
ⓘ
opposing force unit ⓘ reconnaissance ⓘ security ⓘ |
| roleAtNationalTrainingCenter | principal opposing force unit ⓘ |
| service | Regular Army ⓘ |
| size | regiment ⓘ |
| theaterOfOperations |
Europe
ⓘ
Middle East ⓘ Southeast Asia ⓘ |
| type | armored ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: 11th ACR Description of subject: The 11th ACR is a U.S. Army armored cavalry regiment renowned for its reconnaissance and security roles, notably during the Vietnam War and as the principal opposing force unit at the National Training Center.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
11th Armored Cavalry Regiment
subject surface form:
11th Armored Cavalry Regiment
this entity surface form:
HHT, 11th ACR
subject surface form:
11th Armored Cavalry Regiment
this entity surface form:
1/11 ACR