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: Douglas DC-7 | Statement: [Wright R-3350 Duplex-Cyclone, notableApplication, Douglas DC-7]

Target entity: Douglas DC-7
Context triple: [Wright R-3350 Duplex-Cyclone, notableApplication, Douglas DC-7]

• A. Douglas DC-6
  The Douglas DC-6 is a four-engine, propeller-driven airliner and cargo aircraft introduced in the late 1940s, widely used by airlines and militaries around the world for medium- to long-haul flights.
• B. Boeing 377 Stratocruiser
  The Boeing 377 Stratocruiser was a large, luxurious post–World War II long-range airliner derived from the C-97 Stratofreighter, noted for its double-deck cabin and use on premier international routes.
• C. Douglas DC-8
  The Douglas DC-8 is a long-range, narrow-body jet airliner introduced in the late 1950s that became one of the early mainstays of commercial jet aviation.
• D. Lockheed C‑69 Constellation
  The Lockheed C‑69 Constellation was a World War II-era four‑engined military transport aircraft that served as the precursor to the famous Lockheed Constellation airliner.
• E. Lockheed L-188 Electra
  The Lockheed L-188 Electra is an American four‑engine turboprop airliner introduced in the late 1950s, known for its use in both passenger and cargo operations worldwide.
• 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: Douglas DC-7
Triple: [Wright R-3350 Duplex-Cyclone, notableApplication, Douglas DC-7]

The Douglas DC-7 is a long-range, four‑engine propeller-driven airliner introduced in the 1950s, known as one of the last major piston-powered transports before the jet age.

Target entity: Douglas DC-7
Target entity description: The Douglas DC-7 is a long-range, four‑engine propeller-driven airliner introduced in the 1950s, known as one of the last major piston-powered transports before the jet age.

• A. Douglas DC-6
  The Douglas DC-6 is a four-engine, propeller-driven airliner and cargo aircraft introduced in the late 1940s, widely used by airlines and militaries around the world for medium- to long-haul flights.
• B. Boeing 377 Stratocruiser
  The Boeing 377 Stratocruiser was a large, luxurious post–World War II long-range airliner derived from the C-97 Stratofreighter, noted for its double-deck cabin and use on premier international routes.
• C. Douglas DC-8
  The Douglas DC-8 is a long-range, narrow-body jet airliner introduced in the late 1950s that became one of the early mainstays of commercial jet aviation.
• D. Lockheed C‑69 Constellation
  The Lockheed C‑69 Constellation was a World War II-era four‑engined military transport aircraft that served as the precursor to the famous Lockheed Constellation airliner.
• E. Lockheed L-188 Electra
  The Lockheed L-188 Electra is an American four‑engine turboprop airliner introduced in the late 1950s, known for its use in both passenger and cargo operations worldwide.
• F. None of above. chosen