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: Block IIR-M satellites | Statement: [GPS space segment, includesGeneration, Block IIR-M satellites]

Target entity: Block IIR-M satellites
Context triple: [GPS space segment, includesGeneration, Block IIR-M satellites]

• A. MUOS military communications satellites
  MUOS military communications satellites are a U.S. Navy narrowband tactical satellite communications system designed to provide secure, smartphone-like voice and data connectivity to mobile military forces worldwide.
• B. Milstar communications satellites
  Milstar communications satellites are a constellation of secure, jam-resistant U.S. military spacecraft designed to provide survivable, global, low-data-rate communications for strategic and tactical forces.
• C. CBAS-1 military communications satellite
  CBAS-1 is a classified U.S. military communications satellite designed to provide secure, high-capacity relay capabilities for defense and national security operations in geostationary orbit.
• D. BCP 2000 satellite bus
  The BCP 2000 satellite bus is a high-power, modular spacecraft platform developed by Boeing for large, long-life communications and Earth-observation satellites in geostationary and other orbits.
• E. Molniya communications satellites
  Molniya communications satellites are Soviet/Russian spacecraft placed in highly elliptical Molniya orbits to provide long-duration communications coverage over high-latitude regions such as northern Russia.
• 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: Block IIR-M satellites
Triple: [GPS space segment, includesGeneration, Block IIR-M satellites]

Block IIR-M satellites are a modernized series of GPS navigation spacecraft that provide enhanced signal accuracy, reliability, and additional civilian and military capabilities within the Global Positioning System constellation.

Target entity: Block IIR-M satellites
Target entity description: Block IIR-M satellites are a modernized series of GPS navigation spacecraft that provide enhanced signal accuracy, reliability, and additional civilian and military capabilities within the Global Positioning System constellation.

• A. MUOS military communications satellites
  MUOS military communications satellites are a U.S. Navy narrowband tactical satellite communications system designed to provide secure, smartphone-like voice and data connectivity to mobile military forces worldwide.
• B. Milstar communications satellites
  Milstar communications satellites are a constellation of secure, jam-resistant U.S. military spacecraft designed to provide survivable, global, low-data-rate communications for strategic and tactical forces.
• C. CBAS-1 military communications satellite
  CBAS-1 is a classified U.S. military communications satellite designed to provide secure, high-capacity relay capabilities for defense and national security operations in geostationary orbit.
• D. BCP 2000 satellite bus
  The BCP 2000 satellite bus is a high-power, modular spacecraft platform developed by Boeing for large, long-life communications and Earth-observation satellites in geostationary and other orbits.
• E. Molniya communications satellites
  Molniya communications satellites are Soviet/Russian spacecraft placed in highly elliptical Molniya orbits to provide long-duration communications coverage over high-latitude regions such as northern Russia.
• F. None of above. chosen