Nimrod MRA4
E370447
The Nimrod MRA4 was a cancelled British maritime patrol and anti-submarine warfare aircraft program intended to modernize and replace the aging Nimrod fleet with advanced avionics and sensors.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nimrod MRA4 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T3581485 — 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: Nimrod MRA4 Context triple: [Nimrod MR2, plannedReplacement, Nimrod MRA4]
-
A.
Nimrod MR2
The Nimrod MR2 is a retired British maritime patrol and anti-submarine warfare aircraft developed from the de Havilland Comet airliner and operated primarily by the Royal Air Force during the Cold War and beyond.
-
B.
Mirage F1
The Mirage F1 is a French single-seat, supersonic fighter and attack aircraft developed in the 1960s, widely used for air defense, ground attack, and reconnaissance by several air forces around the world.
-
C.
Alpha Jet
The Alpha Jet is a light attack and advanced jet trainer aircraft developed jointly by France and Germany in the 1970s and widely used for pilot training and tactical support roles.
-
D.
SNCASO SO.9000 Trident
The SNCASO SO.9000 Trident is a French experimental mixed-power (turbojet and rocket) interceptor aircraft developed in the 1950s to explore high-speed, high-altitude flight.
-
E.
IAI Dagger
The IAI Dagger is an Israeli-built, export variant of the Mirage 5 fighter-bomber that served as a key combat aircraft for Argentina, notably during the Falklands 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: Nimrod MRA4 Target entity description: The Nimrod MRA4 was a cancelled British maritime patrol and anti-submarine warfare aircraft program intended to modernize and replace the aging Nimrod fleet with advanced avionics and sensors.
-
A.
Nimrod MR2
The Nimrod MR2 is a retired British maritime patrol and anti-submarine warfare aircraft developed from the de Havilland Comet airliner and operated primarily by the Royal Air Force during the Cold War and beyond.
-
B.
Mirage F1
The Mirage F1 is a French single-seat, supersonic fighter and attack aircraft developed in the 1960s, widely used for air defense, ground attack, and reconnaissance by several air forces around the world.
-
C.
Alpha Jet
The Alpha Jet is a light attack and advanced jet trainer aircraft developed jointly by France and Germany in the 1970s and widely used for pilot training and tactical support roles.
-
D.
SNCASO SO.9000 Trident
The SNCASO SO.9000 Trident is a French experimental mixed-power (turbojet and rocket) interceptor aircraft developed in the 1950s to explore high-speed, high-altitude flight.
-
E.
IAI Dagger
The IAI Dagger is an Israeli-built, export variant of the Mirage 5 fighter-bomber that served as a key combat aircraft for Argentina, notably during the Falklands War.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
anti-submarine warfare aircraft program
ⓘ
maritime patrol aircraft program ⓘ |
| airframeBasis | re-manufactured Nimrod MR2 fuselage ⓘ |
| armamentCapability |
anti-ship missiles
ⓘ
depth charges ⓘ mines ⓘ torpedoes ⓘ |
| avionics |
advanced mission system
ⓘ
glass cockpit ⓘ |
| cancellationDate | 2010 ⓘ |
| cancellationReason |
UK defence budget cuts
ⓘ
cost overruns ⓘ delays ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| crew | flight crew and mission crew ⓘ |
| designationMeaning | Maritime Reconnaissance and Attack Mark 4 ⓘ |
| developedFrom |
Hawker Siddeley Nimrod
ⓘ
Nimrod MR2 ⓘ |
| developmentProblems |
airframe tolerance issues
ⓘ
systems integration difficulties ⓘ |
| engineType |
Rolls-Royce BR710
ⓘ
surface form:
Rolls-Royce BR710 turbofan
|
| firstFlight | 2004 ⓘ |
| hardpoints | underwing hardpoints ⓘ |
| intendedMission |
anti-submarine warfare patrols
ⓘ
long-range maritime surveillance ⓘ overland ISR operations ⓘ search and rescue support ⓘ |
| intendedToReplace | Nimrod MR2 ⓘ |
| manufacturer | BAE Systems ⓘ |
| numberBuilt | 3 development aircraft ⓘ |
| numberOfEngines | 4 ⓘ |
| operatorIntended | Royal Air Force ⓘ |
| originalOrderQuantity | 21 aircraft ⓘ |
| plannedFleetSize | 9 production aircraft ⓘ |
| programCostIssue | significant cost growth ⓘ |
| programStatus | cancelled ⓘ |
| programType | modernisation and replacement of Nimrod fleet ⓘ |
| role |
anti-submarine warfare
ⓘ
intelligence, surveillance and reconnaissance ⓘ maritime patrol ⓘ |
| sensor |
acoustic processing system for sonobuoys
ⓘ
electro-optical/infrared turret ⓘ maritime search radar ⓘ |
| serviceEntryPlanned | mid-2000s ⓘ |
| successorOperator | Royal Air Force ⓘ |
| successorTypeSelected |
Boeing P-8 Poseidon
ⓘ
surface form:
Boeing P-8A Poseidon
|
| weaponsBay | internal weapons bay ⓘ |
| wingType | newly designed wing ⓘ |
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: Nimrod MRA4 Description of subject: The Nimrod MRA4 was a cancelled British maritime patrol and anti-submarine warfare aircraft program intended to modernize and replace the aging Nimrod fleet with advanced avionics and sensors.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.