Soko J-21 Jastreb
E280811
The Soko J-21 Jastreb is a Yugoslav single-engine light attack and reconnaissance jet aircraft developed in the 1960s and widely used by the Yugoslav Air Force and several export customers.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Soko J-21 Jastreb canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2591959 — 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: Soko J-21 Jastreb Context triple: [Yugoslav Air Force, notableDomesticAircraft, Soko J-21 Jastreb]
-
A.
Soko J-22 Orao
The Soko J-22 Orao is a Yugoslav-designed twin-engine subsonic ground-attack and reconnaissance aircraft developed jointly by Yugoslavia and Romania during the Cold War.
-
B.
Soko G-4 Super Galeb
The Soko G-4 Super Galeb is a Yugoslav-designed advanced jet trainer and light attack aircraft that became one of the country’s most prominent indigenous military aircraft.
-
C.
Rogožarski IK-3
The Rogožarski IK-3 was a domestically designed Yugoslav single-seat fighter aircraft of the late 1930s, noted for its modern performance and role in the early defense against the Axis invasion in 1941.
-
D.
Kawasaki C-1
The Kawasaki C-1 is a Japanese twin-engine short-range military transport aircraft designed and built by Kawasaki Heavy Industries for tactical airlift operations.
-
E.
FMA IA 58 Pucará
The FMA IA 58 Pucará is an Argentine twin-turboprop, light attack and counter-insurgency aircraft designed for close air support and anti-guerrilla operations.
- 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: Soko J-21 Jastreb Target entity description: The Soko J-21 Jastreb is a Yugoslav single-engine light attack and reconnaissance jet aircraft developed in the 1960s and widely used by the Yugoslav Air Force and several export customers.
-
A.
Soko J-22 Orao
The Soko J-22 Orao is a Yugoslav-designed twin-engine subsonic ground-attack and reconnaissance aircraft developed jointly by Yugoslavia and Romania during the Cold War.
-
B.
Soko G-4 Super Galeb
The Soko G-4 Super Galeb is a Yugoslav-designed advanced jet trainer and light attack aircraft that became one of the country’s most prominent indigenous military aircraft.
-
C.
Rogožarski IK-3
The Rogožarski IK-3 was a domestically designed Yugoslav single-seat fighter aircraft of the late 1930s, noted for its modern performance and role in the early defense against the Axis invasion in 1941.
-
D.
Kawasaki C-1
The Kawasaki C-1 is a Japanese twin-engine short-range military transport aircraft designed and built by Kawasaki Heavy Industries for tactical airlift operations.
-
E.
FMA IA 58 Pucará
The FMA IA 58 Pucará is an Argentine twin-turboprop, light attack and counter-insurgency aircraft designed for close air support and anti-guerrilla operations.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
jet aircraft
ⓘ
light attack aircraft ⓘ military aircraft ⓘ |
| aircraftCategory |
close air support aircraft
ⓘ
trainer-derived attack aircraft ⓘ |
| airIntakeConfiguration | fuselage side intakes ⓘ |
| armament |
gun pods
ⓘ
internal cannons ⓘ rocket pods ⓘ underwing bombs ⓘ |
| cockpitType | single-seat ⓘ |
| configuration | low-wing monoplane ⓘ |
| countryOfOrigin |
Yugoslavia
ⓘ
surface form:
Socialist Federal Republic of Yugoslavia
|
| crew | 1 ⓘ |
| derivedFrom | Soko G-2 Galeb ⓘ |
| designedFor |
close air support missions
ⓘ
tactical reconnaissance missions ⓘ |
| developedInDecade | 1960s ⓘ |
| engineType | turbojet ⓘ |
| firstFlight | 1965 ⓘ |
| fuelType | jet fuel ⓘ |
| introduced | late 1960s ⓘ |
| landingGear | tricycle retractable landing gear ⓘ |
| manufacturer | SOKO ⓘ |
| maxSpeed | approximately 812 km/h ⓘ |
| nameMeaning | Hawk in Serbo-Croatian ⓘ |
| natoReportingName | Jastreb ⓘ |
| numberOfEngines | 1 ⓘ |
| originRegion | Balkans ⓘ |
| powerplant |
Rolls-Royce Viper turbojet
ⓘ
surface form:
Rolls-Royce/Bristol Siddeley Viper turbojet
|
| primaryUser | Yugoslav Air Force ⓘ |
| productionStart | late 1960s ⓘ |
| role |
ground-attack
ⓘ
light attack ⓘ reconnaissance ⓘ |
| serviceCeiling | approximately 11500 m ⓘ |
| status | retired from Yugoslav service ⓘ |
| tailConfiguration | conventional tail ⓘ |
| takeoffAndLanding | conventional takeoff and landing ⓘ |
| usedBy |
Libyan Air Force
ⓘ
Sri Lanka Air Force ⓘ Yugoslav Air Force ⓘ
surface form:
Yugoslav Air Defence Force
Yugoslav Air Force ⓘ Zambian Air Force ⓘ |
| usedInConflict |
Sri Lankan Civil War
ⓘ
Yugoslav Wars ⓘ |
| wingType | straight 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: Soko J-21 Jastreb Description of subject: The Soko J-21 Jastreb is a Yugoslav single-engine light attack and reconnaissance jet aircraft developed in the 1960s and widely used by the Yugoslav Air Force and several export customers.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.