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: STS-51-L crew | Statement: [Challenger Point, namedAfter, STS-51-L crew]

Target entity: STS-51-L crew
Context triple: [Challenger Point, namedAfter, STS-51-L crew]

• A. NASA Astronaut Group 18
  NASA Astronaut Group 18 is a class of NASA astronauts selected in 2000, often nicknamed "The Bugs," which includes spacefarers such as Douglas Hurley.
• B. NASA Astronaut Group 10
  NASA Astronaut Group 10 is a cohort of NASA astronauts selected in 1984, notable for including many who later flew multiple Space Shuttle and International Space Station missions.
• C. NASA Astronaut Group 6
  NASA Astronaut Group 6 was a 1967 class of NASA astronauts that included several future Apollo lunar mission crew members.
• D. NASA Astronaut Group 5
  NASA Astronaut Group 5 was a 1966 class of American astronauts that provided many of the crew members for later Apollo lunar missions and early Skylab flights.
• E. NASA Astronaut Group 7
  NASA Astronaut Group 7 was a cohort of astronauts selected by NASA in 1969, notable for including both scientist-astronauts and pilots who flew on Apollo, Skylab, and early Space Shuttle missions.
• 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: STS-51-L crew
Triple: [Challenger Point, namedAfter, STS-51-L crew]

The STS-51-L crew were the seven astronauts who perished in the 1986 Space Shuttle Challenger disaster during a mission that included teacher Christa McAuliffe.

Target entity: STS-51-L crew
Target entity description: The STS-51-L crew were the seven astronauts who perished in the 1986 Space Shuttle Challenger disaster during a mission that included teacher Christa McAuliffe.

• A. NASA Astronaut Group 18
  NASA Astronaut Group 18 is a class of NASA astronauts selected in 2000, often nicknamed "The Bugs," which includes spacefarers such as Douglas Hurley.
• B. NASA Astronaut Group 10
  NASA Astronaut Group 10 is a cohort of NASA astronauts selected in 1984, notable for including many who later flew multiple Space Shuttle and International Space Station missions.
• C. NASA Astronaut Group 6
  NASA Astronaut Group 6 was a 1967 class of NASA astronauts that included several future Apollo lunar mission crew members.
• D. NASA Astronaut Group 5
  NASA Astronaut Group 5 was a 1966 class of American astronauts that provided many of the crew members for later Apollo lunar missions and early Skylab flights.
• E. NASA Astronaut Group 7
  NASA Astronaut Group 7 was a cohort of astronauts selected by NASA in 1969, notable for including both scientist-astronauts and pilots who flew on Apollo, Skylab, and early Space Shuttle missions.
• F. None of above. chosen