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: cesium atomic clocks | Statement: [International Atomic Time, basedOn, cesium atomic clocks]

Target entity: cesium atomic clocks
Context triple: [International Atomic Time, basedOn, cesium atomic clocks]

• A. International Atomic Time
  International Atomic Time is a high-precision time standard based on the combined output of atomic clocks worldwide, serving as the fundamental reference for modern civil and scientific timekeeping.
• B. Astronomical Clock
  The Astronomical Clock in Prague is a medieval timepiece and astronomical instrument famous for its intricate mechanical design and hourly animated figures, making it one of the city’s most iconic landmarks.
• C. Einstein synchronization convention
  The Einstein synchronization convention is a method in special relativity for synchronizing distant clocks using light signals, forming the standard basis for defining simultaneity in inertial frames.
• D. Deep Space Network
  The Deep Space Network is NASA’s global system of large radio antennas used to track, communicate with, and receive data from distant spacecraft throughout the solar system and beyond.
• E. MICROSCOPE satellite mission
  The MICROSCOPE satellite mission was a French-led space experiment designed to test the validity of Einstein’s equivalence principle with unprecedented precision by comparing the free fall of different materials in orbit.
• 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: cesium atomic clocks
Triple: [International Atomic Time, basedOn, cesium atomic clocks]

Cesium atomic clocks are ultra-precise timekeeping devices that use the microwave frequency of cesium atoms’ electron transitions to define and maintain the international standard for the second.

Target entity: cesium atomic clocks
Target entity description: Cesium atomic clocks are ultra-precise timekeeping devices that use the microwave frequency of cesium atoms’ electron transitions to define and maintain the international standard for the second.

• A. International Atomic Time
  International Atomic Time is a high-precision time standard based on the combined output of atomic clocks worldwide, serving as the fundamental reference for modern civil and scientific timekeeping.
• B. Astronomical Clock
  The Astronomical Clock in Prague is a medieval timepiece and astronomical instrument famous for its intricate mechanical design and hourly animated figures, making it one of the city’s most iconic landmarks.
• C. Einstein synchronization convention
  The Einstein synchronization convention is a method in special relativity for synchronizing distant clocks using light signals, forming the standard basis for defining simultaneity in inertial frames.
• D. Deep Space Network
  The Deep Space Network is NASA’s global system of large radio antennas used to track, communicate with, and receive data from distant spacecraft throughout the solar system and beyond.
• E. MICROSCOPE satellite mission
  The MICROSCOPE satellite mission was a French-led space experiment designed to test the validity of Einstein’s equivalence principle with unprecedented precision by comparing the free fall of different materials in orbit.
• F. None of above. chosen