Lockheed Martin X-35
E21571
The Lockheed Martin X-35 is a prototype stealth multirole fighter that served as the demonstrator for the F-35 Lightning II Joint Strike Fighter program.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Lockheed Martin X-35 canonical | 6 |
| X-35 | 1 |
| X-35 program | 1 |
| X-35A | 1 |
| X-35B | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T145994 — 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: Lockheed Martin X-35 Context triple: [X-Plane experimental aircraft programs, notableAircraft, Lockheed Martin X-35]
-
A.
Boeing X-32
The Boeing X-32 was a stealthy, delta-winged prototype fighter developed for the U.S. Joint Strike Fighter competition, ultimately losing to the Lockheed Martin X-35 (now the F-35).
-
B.
F-35B Lightning II
The F-35B Lightning II is a fifth-generation, stealth, short takeoff and vertical landing (STOVL) multirole fighter jet used by several air arms, including the Royal Air Force and Royal Navy.
-
C.
Grumman X-29
The Grumman X-29 was an experimental U.S. research aircraft notable for its forward-swept wings, advanced composite materials, and fly-by-wire control system used to explore extreme aerodynamic concepts.
-
D.
Rockwell-MBB X-31
The Rockwell-MBB X-31 was an experimental jet fighter demonstrator designed to test advanced thrust vectoring and high-angle-of-attack maneuverability technologies.
-
E.
CF-18 Hornet
The CF-18 Hornet is a Canadian variant of the McDonnell Douglas F/A-18 fighter aircraft, used as a multirole combat jet for air defense and ground attack missions.
- 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: Lockheed Martin X-35 Target entity description: The Lockheed Martin X-35 is a prototype stealth multirole fighter that served as the demonstrator for the F-35 Lightning II Joint Strike Fighter program.
-
A.
Boeing X-32
The Boeing X-32 was a stealthy, delta-winged prototype fighter developed for the U.S. Joint Strike Fighter competition, ultimately losing to the Lockheed Martin X-35 (now the F-35).
-
B.
F-35B Lightning II
The F-35B Lightning II is a fifth-generation, stealth, short takeoff and vertical landing (STOVL) multirole fighter jet used by several air arms, including the Royal Air Force and Royal Navy.
-
C.
Grumman X-29
The Grumman X-29 was an experimental U.S. research aircraft notable for its forward-swept wings, advanced composite materials, and fly-by-wire control system used to explore extreme aerodynamic concepts.
-
D.
Rockwell-MBB X-31
The Rockwell-MBB X-31 was an experimental jet fighter demonstrator designed to test advanced thrust vectoring and high-angle-of-attack maneuverability technologies.
-
E.
CF-18 Hornet
The CF-18 Hornet is a Canadian variant of the McDonnell Douglas F/A-18 fighter aircraft, used as a multirole combat jet for air defense and ground attack missions.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
experimental aircraft
ⓘ
multirole combat aircraft ⓘ prototype fighter aircraft ⓘ stealth aircraft ⓘ |
| aircraftType | single-seat fighter ⓘ |
| airframeMaterial | composite materials ⓘ |
| category | X-series aircraft of the United States ⓘ |
| competedAgainst | Boeing X-32 ⓘ |
| competitorInProgram | Joint Strike Fighter program ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 1 ⓘ |
| designedFor |
air-to-air combat
ⓘ
air-to-ground attack ⓘ carrier operations (X-35C variant) ⓘ multirole missions ⓘ short takeoff and vertical landing (X-35B variant) ⓘ stealth ⓘ |
| developedFor |
Department of Defense
ⓘ
surface form:
United States Department of Defense
|
| engineModel |
Pratt & Whitney F135 engine
ⓘ
surface form:
Pratt & Whitney F119 derivative
|
| era | 1990s–2000s military aircraft ⓘ |
| firstFlightDate | 2000-10-24 ⓘ |
| hasVariant |
Lockheed Martin X-35
self-linksurface differs
ⓘ
surface form:
X-35A
Lockheed Martin X-35 self-linksurface differs ⓘ
surface form:
X-35B
F-35C Lightning II ⓘ
surface form:
X-35C
|
| intendedOperators |
United States Air Force
ⓘ
United States Marine Corps ⓘ United States Navy ⓘ |
| introducedAsDemonstrator | 2000 ⓘ |
| manufacturer | Lockheed Martin ⓘ |
| natoReportingName | none ⓘ |
| partnerCompany |
BAE Systems
ⓘ
Northrop Grumman ⓘ |
| primaryContractor | Lockheed Martin ⓘ |
| programName |
Lockheed Martin X-35
self-linksurface differs
ⓘ
surface form:
X-35 program
|
| programRole | Joint Strike Fighter demonstrator ⓘ |
| propulsionType | turbofan ⓘ |
| relatedAircraft |
F-22 Raptor
ⓘ
surface form:
Lockheed Martin F-22 Raptor
F-35 Lightning II ⓘ
surface form:
Lockheed Martin F-35 Lightning II
|
| role | technology demonstrator for F-35 ⓘ |
| status | retired ⓘ |
| successor |
F-35 Lightning II
ⓘ
surface form:
Lockheed Martin F-35 Lightning II
|
| tailConfiguration | twin tail ⓘ |
| testLocation |
Edwards Air Force Base
ⓘ
Naval Air Station Patuxent River ⓘ |
| usedFor |
evaluation for Joint Strike Fighter competition
ⓘ
flight testing ⓘ technology demonstrator ⓘ |
| wingConfiguration | mid-wing monoplane ⓘ |
| wonCompetition |
Joint Strike Fighter program
ⓘ
surface form:
Joint Strike Fighter competition
|
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: Lockheed Martin X-35 Description of subject: The Lockheed Martin X-35 is a prototype stealth multirole fighter that served as the demonstrator for the F-35 Lightning II Joint Strike Fighter program.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
X-35A
this entity surface form:
X-35B
this entity surface form:
X-35 program
this entity surface form:
X-35