QF 2-pounder gun
E1002870
The QF 2-pounder gun was a British 40 mm anti-tank and tank-mounted cannon widely used in the early years of World War II.
All labels observed (1)
| Label | Occurrences |
|---|---|
| QF 2-pounder gun canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12799095 — 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: QF 2-pounder gun Context triple: [Matilda II infantry tank, mainArmament, QF 2-pounder gun]
-
A.
Sexton self-propelled gun
The Sexton self-propelled gun was a Canadian-built World War II artillery vehicle that mounted a 25-pounder field gun on a tracked chassis for mobile fire support.
-
B.
Vickers 14-inch naval gun
The Vickers 14-inch naval gun was a heavy battleship main armament developed in the early 20th century, used by several navies for long-range naval and coastal artillery.
-
C.
Vickers 15-inch naval gun
The Vickers 15-inch naval gun was a powerful British battleship main armament developed in the early 20th century, renowned for its heavy long-range firepower in World War I and World War II.
-
D.
M68 105 mm gun
The M68 105 mm gun is an American tank cannon widely used on main battle tanks such as the M60 and early M1 Abrams, known for its reliability, accuracy, and NATO standardization.
-
E.
105 mm Royal Ordnance L7 rifled gun
The 105 mm Royal Ordnance L7 rifled gun is a widely adopted British tank gun renowned for its accuracy and penetration, serving as the standard main armament on many NATO main battle tanks during the Cold War.
- 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: QF 2-pounder gun Target entity description: The QF 2-pounder gun was a British 40 mm anti-tank and tank-mounted cannon widely used in the early years of World War II.
-
A.
Sexton self-propelled gun
The Sexton self-propelled gun was a Canadian-built World War II artillery vehicle that mounted a 25-pounder field gun on a tracked chassis for mobile fire support.
-
B.
Vickers 14-inch naval gun
The Vickers 14-inch naval gun was a heavy battleship main armament developed in the early 20th century, used by several navies for long-range naval and coastal artillery.
-
C.
Vickers 15-inch naval gun
The Vickers 15-inch naval gun was a powerful British battleship main armament developed in the early 20th century, renowned for its heavy long-range firepower in World War I and World War II.
-
D.
M68 105 mm gun
The M68 105 mm gun is an American tank cannon widely used on main battle tanks such as the M60 and early M1 Abrams, known for its reliability, accuracy, and NATO standardization.
-
E.
105 mm Royal Ordnance L7 rifled gun
The 105 mm Royal Ordnance L7 rifled gun is a widely adopted British tank gun renowned for its accuracy and penetration, serving as the standard main armament on many NATO main battle tanks during the Cold War.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
anti-tank gun
ⓘ
tank gun ⓘ |
| alsoKnownAs |
40 mm Mark IX gun
ⓘ
linked to:
40 mm Bofors autocannon
two-pounder gun ⓘ |
| ammunitionType |
armor-piercing capped shot
ⓘ
armor-piercing shot ⓘ high-explosive shell ⓘ |
| breechType | semi-automatic vertical sliding-block breech ⓘ |
| caliber |
1.575 in
ⓘ
40 mm ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| designedIn | 1930s ⓘ |
| designGoal | mobile anti-tank defense for infantry formations ⓘ |
| enteredService | late 1930s ⓘ |
| feedSystem | single-shot ⓘ |
| historicalAssessment | effective against early-war tanks but outclassed by mid-war armor ⓘ |
| manufacturer | Vickers-Armstrongs ⓘ |
| mountedOn |
AEC Armoured Car
ⓘ
Cruiser Mk I tank ⓘ
linked to:
Cruiser Tank Mk I
Cruiser Mk II tank ⓘ Cruiser Mk III tank ⓘ Cruiser Mk IV tank ⓘ Daimler Armoured Car ⓘ
linked to:
Ferret armoured cars
Matilda II tank ⓘ
linked to:
Matilda II infantry tanks
Valentine tank ⓘ
linked to:
Valentine infantry tank
|
| mountingPlatform |
armoured fighting vehicle
ⓘ
towed anti-tank carriage ⓘ |
| notableLimitation | lack of effective high-explosive shell in early service ⓘ |
| notableTheatreOfUse |
Battle of France
ⓘ
North African Campaign ⓘ
linked to:
North African campaign
Western Desert ⓘ early Pacific War ⓘ |
| operation | recoil-operated ⓘ |
| primaryRole | anti-tank warfare ⓘ |
| replacedBy | QF 6-pounder gun ⓘ |
| secondaryRole | tank main armament ⓘ |
| type | quick-firing gun ⓘ |
| typicalBarrelLength | 52 calibers ⓘ |
| typicalMuzzleVelocity |
approximately 2,600 ft/s
ⓘ
approximately 790 m/s ⓘ |
| usedBy |
Australian Army
ⓘ
British Army ⓘ Canadian Army ⓘ Commonwealth forces ⓘ
linked to:
British Commonwealth forces
New Zealand Army ⓘ Royal Navy (as adapted variants on some mounts) ⓘ South African Army ⓘ |
| usedInConflict |
Second World War
ⓘ
linked to:
World War II
|
| usedInPeriod | early Second World War ⓘ |
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: QF 2-pounder gun Description of subject: The QF 2-pounder gun was a British 40 mm anti-tank and tank-mounted cannon widely used in the early years of World War II.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Matilda II infantry tanks