Mark IV tank
E432423
The Mark IV tank was a British World War I armored fighting vehicle that became one of the first widely used tanks in combat, notably helping to pioneer large-scale mechanized warfare.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Mark IV tank canonical | 4 |
| Mark IV | 1 |
| Mark V tank | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4319211 — 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: Mark IV tank Context triple: [Cambrai 1917, usedTechnology, Mark IV tank]
-
A.
Vickers 6-Ton tank
The Vickers 6-Ton tank was a British interwar light tank whose design became highly influential worldwide, serving as the basis for several other countries’ armored vehicles, including the Soviet T-26.
-
B.
Churchill tanks
Churchill tanks were British heavy infantry tanks of World War II, noted for their thick armor, ability to tackle difficult terrain, and extensive use in Allied operations.
-
C.
Cromwell tanks
Cromwell tanks were fast British cruiser tanks of World War II, notable for their use in the later stages of the war, including the Normandy campaign.
-
D.
Mark I tank
The Mark I tank was the world’s first operational armored fighting vehicle, introduced by Britain during World War I to break the stalemate of trench warfare.
-
E.
Panther tank
The Panther tank was a German World War II medium tank renowned for its powerful gun, sloped armor, and balance of firepower and mobility, making it one of the most formidable armored vehicles of the 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: Mark IV tank Target entity description: The Mark IV tank was a British World War I armored fighting vehicle that became one of the first widely used tanks in combat, notably helping to pioneer large-scale mechanized warfare.
-
A.
Vickers 6-Ton tank
The Vickers 6-Ton tank was a British interwar light tank whose design became highly influential worldwide, serving as the basis for several other countries’ armored vehicles, including the Soviet T-26.
-
B.
Churchill tanks
Churchill tanks were British heavy infantry tanks of World War II, noted for their thick armor, ability to tackle difficult terrain, and extensive use in Allied operations.
-
C.
Cromwell tanks
Cromwell tanks were fast British cruiser tanks of World War II, notable for their use in the later stages of the war, including the Normandy campaign.
-
D.
Mark I tank
The Mark I tank was the world’s first operational armored fighting vehicle, introduced by Britain during World War I to break the stalemate of trench warfare.
-
E.
Panther tank
The Panther tank was a German World War II medium tank renowned for its powerful gun, sloped armor, and balance of firepower and mobility, making it one of the most formidable armored vehicles of the war.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
British military vehicle
ⓘ
armored fighting vehicle ⓘ tank ⓘ |
| armamentVariant |
Female version armed with only machine guns
ⓘ
Male version armed with 6-pounder guns and machine guns ⓘ |
| armorThickness | up to 12 mm ⓘ |
| category | British World War I tanks ⓘ |
| combatWeight | approximately 28 tonnes ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| crew | 8 ⓘ |
| designedBy |
Walter Gordon Wilson
ⓘ
William Tritton ⓘ |
| designedFor | crossing wide trenches ⓘ |
| developedFrom | Mark I tank ⓘ |
| enginePower | 105 hp ⓘ |
| engineType |
Daimler-Foster 6-cylinder petrol engine
ⓘ
linked to:
Daimler 6-cylinder petrol engine
|
| enteredService | 1917 ⓘ |
| era | World War I era ⓘ |
| feature |
side-mounted sponsons for main armament
ⓘ
unditching beam carried on roof ⓘ |
| height | 2.46 m ⓘ |
| hullLayout | rhomboid hull design ⓘ |
| introduced | 1917 ⓘ |
| length | 8.23 m ⓘ |
| manufacturer |
Fosters of Lincoln
ⓘ
Metropolitan Carriage, Wagon and Finance Company ⓘ |
| maximumSpeed | about 6 km/h ⓘ |
| notableFor |
being one of the first tanks used on a large scale
ⓘ
pioneering mechanized warfare tactics ⓘ |
| numberBuilt | over 1200 ⓘ |
| operationalRange | about 56 km on road ⓘ |
| operator |
Australia (captured vehicles)
ⓘ
Germany (captured vehicles) ⓘ
linked to:
Germany
United Kingdom ⓘ |
| preservedExampleLocation |
Australian War Memorial
ⓘ
Bovington Tank Museum ⓘ
linked to:
The Tank Museum, Bovington
Imperial War Museum London ⓘ
linked to:
Imperial War Museums
|
| primaryArmament |
QF 6-pounder 6 cwt gun
ⓘ
machine guns ⓘ |
| succeededBy |
Mark V tank
ⓘ
linked to:
Mark IV tank
|
| trackType | full-length all-round track ⓘ |
| usedAs | infantry support tank ⓘ |
| usedBy | British Army ⓘ |
| usedInConflict |
Battle of Amiens
ⓘ
linked to:
Battle of Amiens (1918)
Battle of Cambrai ⓘ Third Battle of Ypres ⓘ World War I ⓘ |
| width | 4.11 m ⓘ |
| withdrawnFromService | early 1920s ⓘ |
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: Mark IV tank Description of subject: The Mark IV tank was a British World War I armored fighting vehicle that became one of the first widely used tanks in combat, notably helping to pioneer large-scale mechanized warfare.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mark IV tank