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: Lockheed Martin X-33 | Statement: [NASA X-plane series, includes, Lockheed Martin X-33]

Target entity: Lockheed Martin X-33
Context triple: [NASA X-plane series, includes, Lockheed Martin X-33]

• A. Boeing X-32
  The Boeing X-32 was a stealthy, delta-winged prototype fighter developed for the U.S. Joint Strike Fighter competition, ultimately losing to the Lockheed Martin X-35 (now the F-35).
• B. Boeing X-48
  The Boeing X-48 is an experimental blended wing body research aircraft developed to test advanced aerodynamic and efficiency concepts for future military and commercial planes.
• C. Boeing X-45
  The Boeing X-45 is an experimental unmanned combat air vehicle (UCAV) developed for the U.S. military to demonstrate autonomous strike and reconnaissance capabilities.
• D. Lockheed Martin X-56
  The Lockheed Martin X-56 is an experimental unmanned research aircraft designed to test flexible, lightweight wings and active flutter suppression technologies for future high-efficiency aircraft.
• E. X-51A Waverider scramjet demonstrator
  The X-51A Waverider scramjet demonstrator is an experimental unmanned hypersonic aircraft designed to test air-breathing supersonic combustion ramjet propulsion at extremely high speeds.
• 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: Lockheed Martin X-33
Triple: [NASA X-plane series, includes, Lockheed Martin X-33]

The Lockheed Martin X-33 was an experimental, unmanned, subscale technology demonstrator intended to validate key technologies for a reusable single-stage-to-orbit spaceplane.

Target entity: Lockheed Martin X-33
Target entity description: The Lockheed Martin X-33 was an experimental, unmanned, subscale technology demonstrator intended to validate key technologies for a reusable single-stage-to-orbit spaceplane.

• A. Boeing X-32
  The Boeing X-32 was a stealthy, delta-winged prototype fighter developed for the U.S. Joint Strike Fighter competition, ultimately losing to the Lockheed Martin X-35 (now the F-35).
• B. Boeing X-48
  The Boeing X-48 is an experimental blended wing body research aircraft developed to test advanced aerodynamic and efficiency concepts for future military and commercial planes.
• C. Boeing X-45
  The Boeing X-45 is an experimental unmanned combat air vehicle (UCAV) developed for the U.S. military to demonstrate autonomous strike and reconnaissance capabilities.
• D. Lockheed Martin X-56
  The Lockheed Martin X-56 is an experimental unmanned research aircraft designed to test flexible, lightweight wings and active flutter suppression technologies for future high-efficiency aircraft.
• E. X-51A Waverider scramjet demonstrator
  The X-51A Waverider scramjet demonstrator is an experimental unmanned hypersonic aircraft designed to test air-breathing supersonic combustion ramjet propulsion at extremely high speeds.
• F. None of above. chosen