Lockheed U-2
E30124
The Lockheed U-2 is a high-altitude American reconnaissance aircraft designed for intelligence gathering missions, particularly during the Cold War.
All labels observed (15)
| Label | Occurrences |
|---|---|
| Lockheed U-2 canonical | 16 |
| U-2R | 3 |
| U-2S | 3 |
| Lockheed U-2 (early variants via derivative) | 1 |
| Lockheed U-2 family | 1 |
| Lockheed U-2 program | 1 |
| Lockheed U-2R | 1 |
| Lockheed U-2S | 1 |
| Lockheed U-2S Dragon Lady | 1 |
| U-2 Dragon Lady | 1 |
| U-2 reconnaissance aircraft | 1 |
| U-2 reconnaissance program | 1 |
| U-2A | 1 |
| U-2C | 1 |
| U-2S Dragon Lady | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T235244 — 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 U-2 Context triple: [U-2 incident of 1960, aircraftType, Lockheed U-2]
-
A.
Douglas X-3 Stiletto
The Douglas X-3 Stiletto was a slender, jet-powered experimental research aircraft of the early 1950s designed to investigate sustained supersonic flight and advanced aerodynamic concepts for future high-speed aircraft.
-
B.
Bell X-2
The Bell X-2 was a rocket-powered experimental research aircraft developed in the 1950s to investigate flight characteristics at extremely high speeds and altitudes, contributing crucial data to early supersonic and space-era aeronautics.
-
C.
Bell X-1
The Bell X-1 was a pioneering rocket-powered research aircraft that became the first airplane to break the sound barrier in level flight.
-
D.
Bell X-5
The Bell X-5 was an early U.S. experimental jet that pioneered variable-sweep wing technology, helping to shape the design of later high-performance military aircraft.
-
E.
Northrop X-21
The Northrop X-21 was an experimental U.S. jet aircraft of the 1960s designed to test laminar-flow control technology for improved aerodynamic efficiency.
- 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 U-2 Target entity description: The Lockheed U-2 is a high-altitude American reconnaissance aircraft designed for intelligence gathering missions, particularly during the Cold War.
-
A.
Douglas X-3 Stiletto
The Douglas X-3 Stiletto was a slender, jet-powered experimental research aircraft of the early 1950s designed to investigate sustained supersonic flight and advanced aerodynamic concepts for future high-speed aircraft.
-
B.
Bell X-2
The Bell X-2 was a rocket-powered experimental research aircraft developed in the 1950s to investigate flight characteristics at extremely high speeds and altitudes, contributing crucial data to early supersonic and space-era aeronautics.
-
C.
Bell X-1
The Bell X-1 was a pioneering rocket-powered research aircraft that became the first airplane to break the sound barrier in level flight.
-
D.
Bell X-5
The Bell X-5 was an early U.S. experimental jet that pioneered variable-sweep wing technology, helping to shape the design of later high-performance military aircraft.
-
E.
Northrop X-21
The Northrop X-21 was an experimental U.S. jet aircraft of the 1960s designed to test laminar-flow control technology for improved aerodynamic efficiency.
- F. None of above. chosen
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
high-altitude aircraft
ⓘ
military aircraft ⓘ reconnaissance aircraft ⓘ |
| aircraftCategory |
fixed-wing aircraft
ⓘ
single-engine jet ⓘ |
| alsoKnownAs | Kelly Johnson ⓘ |
| basedAt | Beale Air Force Base ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 1 ⓘ |
| designedFor | high-altitude intelligence gathering ⓘ |
| designer | Clarence Johnson ⓘ |
| developedFor | Central Intelligence Agency ⓘ |
| engineModel |
General Electric F118
ⓘ
Pratt & Whitney J57 ⓘ |
| firstFlight | 1955-08-01 ⓘ |
| introduced | 1956 ⓘ |
| landingGear | bicycle-type landing gear ⓘ |
| manufacturer |
Lockheed Martin
ⓘ
surface form:
Lockheed
Lockheed Skunk Works ⓘ |
| maxSpeed |
approximately 500 mph
ⓘ
approximately 805 km/h ⓘ |
| nickname | Dragon Lady ⓘ |
| notableEvent |
U-2 incident of 1960
ⓘ
surface form:
1960 U-2 incident
|
| notablePilot | Francis Gary Powers ⓘ |
| operator |
Central Intelligence Agency
ⓘ
Republic of China Air Force ⓘ United States Air Force ⓘ |
| primaryUser |
Central Intelligence Agency
ⓘ
United States Air Force ⓘ |
| programStart | 1954 ⓘ |
| propulsion | single turbojet engine ⓘ |
| range |
over 11000 km
ⓘ
over 6000 nmi ⓘ |
| role | strategic reconnaissance ⓘ |
| serviceCeiling |
above 21000 m
ⓘ
above 70000 ft ⓘ |
| status | in service ⓘ |
| successor |
SR-71 Blackbird
ⓘ
surface form:
Lockheed SR-71 Blackbird
|
| takeoffAndLanding | conventional runway ⓘ |
| usedDuring |
Cold War
ⓘ
Cuban Missile Crisis ⓘ Gulf War ⓘ Iraq War ⓘ Vietnam War ⓘ War in Afghanistan (2001–2021) ⓘ
surface form:
War in Afghanistan
|
| usedFor |
aerial reconnaissance
ⓘ
imagery intelligence ⓘ signals intelligence ⓘ |
| variant |
TR-1A
ⓘ
Lockheed U-2 self-linksurface differs ⓘ
surface form:
U-2A
Lockheed U-2 self-linksurface differs ⓘ
surface form:
U-2C
Lockheed U-2 self-linksurface differs ⓘ
surface form:
U-2R
Lockheed U-2 self-linksurface differs ⓘ
surface form:
U-2S
|
| wingConfiguration | high-wing ⓘ |
| wingType | glider-like high-aspect-ratio 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: Lockheed U-2 Description of subject: The Lockheed U-2 is a high-altitude American reconnaissance aircraft designed for intelligence gathering missions, particularly during the Cold War.
Referenced by (34)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
U-2 reconnaissance program
this entity surface form:
U-2A
this entity surface form:
U-2C
this entity surface form:
U-2R
this entity surface form:
U-2S
subject surface form:
Lockheed Martin Aeronautics
this entity surface form:
U-2 reconnaissance aircraft
subject surface form:
1960 U-2 incident
subject surface form:
Lockheed U-2
this entity surface form:
U-2R
this entity surface form:
Lockheed U-2 family
this entity surface form:
U-2R
this entity surface form:
Lockheed U-2 (early variants via derivative)
this entity surface form:
Lockheed U-2S
this entity surface form:
U-2S
this entity surface form:
Lockheed U-2S Dragon Lady
this entity surface form:
U-2S Dragon Lady
United States Air Force intelligence, surveillance, and reconnaissance enterprise
→
usesPlatform
→
Lockheed U-2
ⓘ
this entity surface form:
U-2 Dragon Lady
subject surface form:
Francis Gary Powers
this entity surface form:
Lockheed U-2 program