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: X-20 Dyna-Soar | Statement: [Boeing X-37, relatedTo, X-20 Dyna-Soar]

Target entity: X-20 Dyna-Soar
Context triple: [Boeing X-37, relatedTo, X-20 Dyna-Soar]

• A. North American X-15
  The North American X-15 was a rocket-powered experimental research aircraft that set speed and altitude records in the 1960s and significantly advanced knowledge of hypersonic flight and spaceflight.
• B. 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.
• C. 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.
• D. Bell X-15
  The Bell X-15 was a rocket-powered experimental aircraft that set speed and altitude records in the 1960s and contributed crucial data to the development of crewed spaceflight and high-speed aeronautics.
• E. Bell X-1D
  The Bell X-1D was an experimental rocket-powered research aircraft in the X-1 series, built to extend high-speed flight testing beyond the capabilities of the original Bell X-1.
• 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: X-20 Dyna-Soar
Triple: [Boeing X-37, relatedTo, X-20 Dyna-Soar]

The X-20 Dyna-Soar was a U.S. Air Force experimental spaceplane project from the early Cold War era, intended for orbital reconnaissance, bombing, and other military missions before its cancellation in the 1960s.

Target entity: X-20 Dyna-Soar
Target entity description: The X-20 Dyna-Soar was a U.S. Air Force experimental spaceplane project from the early Cold War era, intended for orbital reconnaissance, bombing, and other military missions before its cancellation in the 1960s.

• A. North American X-15
  The North American X-15 was a rocket-powered experimental research aircraft that set speed and altitude records in the 1960s and significantly advanced knowledge of hypersonic flight and spaceflight.
• B. 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.
• C. 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.
• D. Bell X-15
  The Bell X-15 was a rocket-powered experimental aircraft that set speed and altitude records in the 1960s and contributed crucial data to the development of crewed spaceflight and high-speed aeronautics.
• E. Bell X-1D
  The Bell X-1D was an experimental rocket-powered research aircraft in the X-1 series, built to extend high-speed flight testing beyond the capabilities of the original Bell X-1.
• F. None of above. chosen