Lockheed A-12
E223687
experimental aircraft
high-altitude aircraft
jet aircraft
military aircraft
reconnaissance aircraft
supersonic aircraft
The Lockheed A-12 was a high-altitude, Mach 3+ reconnaissance aircraft developed in the early 1960s for the CIA as part of the Oxcart program, serving as the secret predecessor to the SR-71 Blackbird.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lockheed A-12 canonical | 12 |
| Lockheed YF-12 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1994789 — 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 A-12 Context triple: [SR-71 Blackbird, derivedFrom, Lockheed A-12]
-
A.
SR-71 Blackbird
The SR-71 Blackbird is a long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed by Lockheed’s Skunk Works and renowned as one of the fastest air-breathing manned aircraft ever built.
-
B.
Lockheed U-2
The Lockheed U-2 is a high-altitude American reconnaissance aircraft designed for intelligence gathering missions, particularly during the Cold War.
-
C.
Boeing RC-135W Rivet Joint
The Boeing RC-135W Rivet Joint is a highly modified reconnaissance aircraft used primarily for signals intelligence gathering and electronic surveillance operations.
-
D.
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.
-
E.
McDonnell F-101 Voodoo
The McDonnell F-101 Voodoo is a supersonic jet fighter and reconnaissance aircraft developed for the United States Air Force 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: Lockheed A-12 Target entity description: The Lockheed A-12 was a high-altitude, Mach 3+ reconnaissance aircraft developed in the early 1960s for the CIA as part of the Oxcart program, serving as the secret predecessor to the SR-71 Blackbird.
-
A.
SR-71 Blackbird
The SR-71 Blackbird is a long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed by Lockheed’s Skunk Works and renowned as one of the fastest air-breathing manned aircraft ever built.
-
B.
Lockheed U-2
The Lockheed U-2 is a high-altitude American reconnaissance aircraft designed for intelligence gathering missions, particularly during the Cold War.
-
C.
Boeing RC-135W Rivet Joint
The Boeing RC-135W Rivet Joint is a highly modified reconnaissance aircraft used primarily for signals intelligence gathering and electronic surveillance operations.
-
D.
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.
-
E.
McDonnell F-101 Voodoo
The McDonnell F-101 Voodoo is a supersonic jet fighter and reconnaissance aircraft developed for the United States Air Force during the Cold War.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
experimental aircraft
ⓘ
high-altitude aircraft ⓘ jet aircraft ⓘ military aircraft ⓘ reconnaissance aircraft ⓘ supersonic aircraft ⓘ |
| aircraftFamily | Blackbird family ⓘ |
| armament | unarmed ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew |
1
ⓘ
single-seat ⓘ |
| cruiseSpeed | Mach 3+ ⓘ |
| designer | Clarence "Kelly" Johnson ⓘ |
| developedFor | Central Intelligence Agency ⓘ |
| developedFrom | Lockheed A-11 design studies ⓘ |
| developedUnderProgram | Oxcart ⓘ |
| engineModel | Pratt & Whitney J58 ⓘ |
| engineType | turbofan ⓘ |
| feature |
area rule fuselage
ⓘ
chine design ⓘ flush riveting ⓘ radar cross-section reduction ⓘ stealth shaping ⓘ |
| firstFlight | 1962-04-26 ⓘ |
| introductionYear | 1963 ⓘ |
| manufacturer |
Lockheed Aircraft Company
ⓘ
surface form:
Lockheed Corporation
Lockheed Skunk Works ⓘ |
| material | titanium ⓘ |
| maximumSpeed | Mach 3.2 ⓘ |
| natoReportingName | none ⓘ |
| numberBuilt | 13 ⓘ |
| numberOfEngines | 2 ⓘ |
| operationalTheater | Vietnam War era ⓘ |
| operationalUse |
reconnaissance over North Korea
ⓘ
reconnaissance over North Vietnam ⓘ |
| predecessorOf |
SR-71 Blackbird
ⓘ
surface form:
Lockheed SR-71 Blackbird
|
| primaryMission | photographic reconnaissance ⓘ |
| primaryUser | Central Intelligence Agency ⓘ |
| retirementYear | 1968 ⓘ |
| role | strategic reconnaissance ⓘ |
| serviceCeiling |
26000 m
ⓘ
85000 ft ⓘ |
| status | retired ⓘ |
| successor |
SR-71 Blackbird
ⓘ
surface form:
Lockheed SR-71
|
| tailConfiguration | twin-fin ⓘ |
| usedBy | United States Air Force ⓘ |
| variant |
M-21
ⓘ
Lockheed YF-12 ⓘ
surface form:
YF-12
|
| wingConfiguration | delta 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 A-12 Description of subject: The Lockheed A-12 was a high-altitude, Mach 3+ reconnaissance aircraft developed in the early 1960s for the CIA as part of the Oxcart program, serving as the secret predecessor to the SR-71 Blackbird.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lockheed YF-12