Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: Soko J-21 Jastreb | Statement: [Yugoslav Air Force, notableDomesticAircraft, Soko J-21 Jastreb]

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.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: Soko J-21 Jastreb
Triple: [Yugoslav Air Force, notableDomesticAircraft, Soko J-21 Jastreb]

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.

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