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: Gravity Probe B experiment | Statement: [general relativity, testedBy, Gravity Probe B experiment]

Target entity: Gravity Probe B experiment
Context triple: [general relativity, testedBy, Gravity Probe B experiment]

• A. Hafele–Keating experiment
  The Hafele–Keating experiment was a 1971 test of Einstein’s theory of relativity in which atomic clocks were flown around the world on commercial airliners and compared with stationary clocks to measure time dilation effects.
• B. Ives–Stilwell experiment
  The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
• C. Kennedy–Thorndike experiment
  The Kennedy–Thorndike experiment is a classic test of special relativity that examined the constancy of the speed of light using an interferometer with unequal arm lengths and varying laboratory velocity.
• D. Michelson–Morley experiment
  The Michelson–Morley experiment was a landmark 1887 physics experiment that attempted to detect the Earth's motion through the hypothesized luminiferous aether and whose null result helped pave the way for Einstein's theory of special relativity.
• E. Cavendish experiment
  The Cavendish experiment was an 18th-century physics experiment by Henry Cavendish that measured the tiny gravitational attraction between lead spheres, allowing the first calculation of the gravitational constant and the mass of the Earth.
• 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: Gravity Probe B experiment
Triple: [general relativity, testedBy, Gravity Probe B experiment]

Gravity Probe B experiment was a NASA-led satellite mission designed to precisely measure how Earth's gravity warps space and time, providing a high-accuracy test of key predictions of Einstein's general relativity.

Target entity: Gravity Probe B experiment
Target entity description: Gravity Probe B experiment was a NASA-led satellite mission designed to precisely measure how Earth's gravity warps space and time, providing a high-accuracy test of key predictions of Einstein's general relativity.

• A. Hafele–Keating experiment
  The Hafele–Keating experiment was a 1971 test of Einstein’s theory of relativity in which atomic clocks were flown around the world on commercial airliners and compared with stationary clocks to measure time dilation effects.
• B. Ives–Stilwell experiment
  The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
• C. Kennedy–Thorndike experiment
  The Kennedy–Thorndike experiment is a classic test of special relativity that examined the constancy of the speed of light using an interferometer with unequal arm lengths and varying laboratory velocity.
• D. Michelson–Morley experiment
  The Michelson–Morley experiment was a landmark 1887 physics experiment that attempted to detect the Earth's motion through the hypothesized luminiferous aether and whose null result helped pave the way for Einstein's theory of special relativity.
• E. Cavendish experiment
  The Cavendish experiment was an 18th-century physics experiment by Henry Cavendish that measured the tiny gravitational attraction between lead spheres, allowing the first calculation of the gravitational constant and the mass of the Earth.
• F. None of above. chosen