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: Tracking and Data Relay Satellite-B | Statement: [STS-51L, plannedPayload, Tracking and Data Relay Satellite-B]

Target entity: Tracking and Data Relay Satellite-B
Context triple: [STS-51L, plannedPayload, Tracking and Data Relay Satellite-B]

• A. SCISAT-1
  SCISAT-1 is a Canadian scientific satellite dedicated primarily to studying Earth's upper atmosphere and monitoring ozone layer chemistry and related trace gases.
• B. Deep Space Climate Observatory
  The Deep Space Climate Observatory (DSCOVR) is a NOAA and NASA satellite positioned at the Sun–Earth L1 Lagrange point that continuously monitors solar wind conditions and provides real-time space weather and Earth observation data.
• C. Vanguard 1 satellite
  Vanguard 1 satellite is an early American artificial Earth satellite launched in 1958 that became the fourth human-made object in space and the oldest still in orbit, used primarily for geophysical and atmospheric research.
• D. Terra satellite
  Terra is a flagship NASA Earth observation satellite that carries multiple instruments to monitor the planet’s climate, land, oceans, and atmosphere from polar orbit.
• E. Arabsat-6A
  Arabsat-6A is a high-capacity Saudi communications satellite launched in 2019 to provide television, internet, and telecommunications services across the Middle East, Africa, and Europe.
• 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: Tracking and Data Relay Satellite-B
Triple: [STS-51L, plannedPayload, Tracking and Data Relay Satellite-B]

Tracking and Data Relay Satellite-B was a NASA communications satellite intended to relay data between spacecraft in low Earth orbit and ground stations as part of the Tracking and Data Relay Satellite System (TDRSS).

Target entity: Tracking and Data Relay Satellite-B
Target entity description: Tracking and Data Relay Satellite-B was a NASA communications satellite intended to relay data between spacecraft in low Earth orbit and ground stations as part of the Tracking and Data Relay Satellite System (TDRSS).

• A. SCISAT-1
  SCISAT-1 is a Canadian scientific satellite dedicated primarily to studying Earth's upper atmosphere and monitoring ozone layer chemistry and related trace gases.
• B. Deep Space Climate Observatory
  The Deep Space Climate Observatory (DSCOVR) is a NOAA and NASA satellite positioned at the Sun–Earth L1 Lagrange point that continuously monitors solar wind conditions and provides real-time space weather and Earth observation data.
• C. Vanguard 1 satellite
  Vanguard 1 satellite is an early American artificial Earth satellite launched in 1958 that became the fourth human-made object in space and the oldest still in orbit, used primarily for geophysical and atmospheric research.
• D. Terra satellite
  Terra is a flagship NASA Earth observation satellite that carries multiple instruments to monitor the planet’s climate, land, oceans, and atmosphere from polar orbit.
• E. Arabsat-6A
  Arabsat-6A is a high-capacity Saudi communications satellite launched in 2019 to provide television, internet, and telecommunications services across the Middle East, Africa, and Europe.
• F. None of above. chosen

Target predicate: plannedPayload
Context triple: [STS-51L, plannedPayload, Tracking and Data Relay Satellite-B]

• A. plannedAt
  Indicates that an event, action, or activity is scheduled or intended to occur at a specific time or date.
• B. planned
  Indicates that an entity has intentionally arranged or scheduled another entity or event to occur in the future.
• C. plannedUnder
  Indicates that one entity has been scheduled, organized, or arranged to occur within the scope, authority, or framework of another entity.
• D. commanderPlanned
  Indicates that a commander formulated or devised a plan for a particular action, operation, or objective.
• E. plannedAdaptation
  Indicates that an adaptation or modification has been intentionally designed or scheduled to occur in response to certain conditions or goals.
• F. None of above. chosen