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: Challenger Memorial at Arlington National Cemetery | Statement: [STS-51L, memorial, Challenger Memorial at Arlington National Cemetery]

Target entity: Challenger Memorial at Arlington National Cemetery
Context triple: [STS-51L, memorial, Challenger Memorial at Arlington National Cemetery]

• A. Old Amphitheater at Arlington National Cemetery
  The Old Amphitheater at Arlington National Cemetery was the original open-air ceremonial structure used for memorial services and national observances before being superseded by the larger Memorial Amphitheater.
• B. Pentagon Memorial
  The Pentagon Memorial is a national memorial in Arlington, Virginia, honoring the 184 victims who died in the September 11, 2001 attack on the Pentagon.
• C. Air Force Memorial
  The Air Force Memorial is a national monument in Arlington, Virginia, honoring the service and sacrifice of members of the United States Air Force through three soaring stainless-steel spires that evoke the flight of the Air Force Thunderbirds.
• D. Tomb of the Unknown Soldier
  The Tomb of the Unknown Soldier is a solemn U.S. military monument honoring unidentified American service members who died in war.
• E. Tomb of the Unknown Soldier
  The Tomb of the Unknown Soldier is a memorial beneath Paris’s Arc de Triomphe honoring unidentified soldiers who died in World War I and symbolizing all unknown war dead.
• 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: Challenger Memorial at Arlington National Cemetery
Triple: [STS-51L, memorial, Challenger Memorial at Arlington National Cemetery]

The Challenger Memorial at Arlington National Cemetery is a monument honoring the seven astronauts who lost their lives in the 1986 Space Shuttle Challenger disaster.

Target entity: Challenger Memorial at Arlington National Cemetery
Target entity description: The Challenger Memorial at Arlington National Cemetery is a monument honoring the seven astronauts who lost their lives in the 1986 Space Shuttle Challenger disaster.

• A. Old Amphitheater at Arlington National Cemetery
  The Old Amphitheater at Arlington National Cemetery was the original open-air ceremonial structure used for memorial services and national observances before being superseded by the larger Memorial Amphitheater.
• B. Pentagon Memorial
  The Pentagon Memorial is a national memorial in Arlington, Virginia, honoring the 184 victims who died in the September 11, 2001 attack on the Pentagon.
• C. Air Force Memorial
  The Air Force Memorial is a national monument in Arlington, Virginia, honoring the service and sacrifice of members of the United States Air Force through three soaring stainless-steel spires that evoke the flight of the Air Force Thunderbirds.
• D. Tomb of the Unknown Soldier
  The Tomb of the Unknown Soldier is a solemn U.S. military monument honoring unidentified American service members who died in war.
• E. Tomb of the Unknown Soldier
  The Tomb of the Unknown Soldier is a memorial beneath Paris’s Arc de Triomphe honoring unidentified soldiers who died in World War I and symbolizing all unknown war dead.
• F. None of above. chosen