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: D-21 reconnaissance drone | Statement: [Lockheed Skunk Works, notableProduct, D-21 reconnaissance drone]

Target entity: D-21 reconnaissance drone
Context triple: [Lockheed Skunk Works, notableProduct, D-21 reconnaissance drone]

• A. Lockheed U-2
  The Lockheed U-2 is a high-altitude American reconnaissance aircraft designed for intelligence gathering missions, particularly during the Cold War.
• B. Lockheed A-12
  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.
• C. 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.
• D. IAI Dagger
  The IAI Dagger is an Israeli-built, export variant of the Mirage 5 fighter-bomber that served as a key combat aircraft for Argentina, notably during the Falklands War.
• E. Martin Marietta X-24B
  The Martin Marietta X-24B was an experimental lifting-body research aircraft developed in the 1970s to study unpowered reentry and landing techniques that helped pave the way for the Space Shuttle program.
• 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: D-21 reconnaissance drone
Triple: [Lockheed Skunk Works, notableProduct, D-21 reconnaissance drone]

The D-21 reconnaissance drone was a high-speed, high-altitude, unmanned spy aircraft developed in the 1960s for covert photographic missions over hostile territory, notably designed to cruise at Mach 3+ and extreme altitudes.

Target entity: D-21 reconnaissance drone
Target entity description: The D-21 reconnaissance drone was a high-speed, high-altitude, unmanned spy aircraft developed in the 1960s for covert photographic missions over hostile territory, notably designed to cruise at Mach 3+ and extreme altitudes.

• A. Lockheed U-2
  The Lockheed U-2 is a high-altitude American reconnaissance aircraft designed for intelligence gathering missions, particularly during the Cold War.
• B. Lockheed A-12
  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.
• C. 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.
• D. IAI Dagger
  The IAI Dagger is an Israeli-built, export variant of the Mirage 5 fighter-bomber that served as a key combat aircraft for Argentina, notably during the Falklands War.
• E. Martin Marietta X-24B
  The Martin Marietta X-24B was an experimental lifting-body research aircraft developed in the 1970s to study unpowered reentry and landing techniques that helped pave the way for the Space Shuttle program.
• F. None of above. chosen