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: MD-90-50 (proposed) | Statement: [McDonnell Douglas MD-90, hasVariant, MD-90-50 (proposed)]

Target entity: MD-90-50 (proposed)
Context triple: [McDonnell Douglas MD-90, hasVariant, MD-90-50 (proposed)]

• A. McDonnell Douglas MD-90
  The McDonnell Douglas MD-90 is a twin-engine, medium-range commercial jet airliner developed in the 1990s as an updated, stretched, and more fuel-efficient derivative of the MD-80 series.
• B. McDonnell Douglas MD-95
  The McDonnell Douglas MD-95, later redesignated the Boeing 717, is a twin-engine, short- to medium-range jet airliner developed as the final member of the DC-9/MD-80 family for regional airline service.
• C. McDonnell Douglas MD-87
  The McDonnell Douglas MD-87 is a shortened, medium-range variant of the MD-80 series jet airliners, designed for improved performance on routes with lower passenger demand.
• D. McDonnell Douglas MD-80
  The McDonnell Douglas MD-80 is a series of twin-engine, short- to medium-range jet airliners widely used from the 1980s onward as an extended, more efficient development of the DC-9.
• E. McDonnell Douglas MD-88
  The McDonnell Douglas MD-88 is a twin-engine, short- to medium-range narrow-body jet airliner introduced in the late 1980s as an advanced, updated variant of the MD-80 series, widely used by U.S. airlines for domestic routes.
• 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: MD-90-50 (proposed)
Triple: [McDonnell Douglas MD-90, hasVariant, MD-90-50 (proposed)]

The MD-90-50 (proposed) was a planned stretched, higher-capacity variant of the McDonnell Douglas MD-90 airliner that never progressed beyond the design stage.

Target entity: MD-90-50 (proposed)
Target entity description: The MD-90-50 (proposed) was a planned stretched, higher-capacity variant of the McDonnell Douglas MD-90 airliner that never progressed beyond the design stage.

• A. McDonnell Douglas MD-90 chosen
  The McDonnell Douglas MD-90 is a twin-engine, medium-range commercial jet airliner developed in the 1990s as an updated, stretched, and more fuel-efficient derivative of the MD-80 series.
• B. McDonnell Douglas MD-95
  The McDonnell Douglas MD-95, later redesignated the Boeing 717, is a twin-engine, short- to medium-range jet airliner developed as the final member of the DC-9/MD-80 family for regional airline service.
• C. McDonnell Douglas MD-87
  The McDonnell Douglas MD-87 is a shortened, medium-range variant of the MD-80 series jet airliners, designed for improved performance on routes with lower passenger demand.
• D. McDonnell Douglas MD-80
  The McDonnell Douglas MD-80 is a series of twin-engine, short- to medium-range jet airliners widely used from the 1980s onward as an extended, more efficient development of the DC-9.
• E. McDonnell Douglas MD-88
  The McDonnell Douglas MD-88 is a twin-engine, short- to medium-range narrow-body jet airliner introduced in the late 1980s as an advanced, updated variant of the MD-80 series, widely used by U.S. airlines for domestic routes.
• F. None of above.