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 | Statement: [Lense–Thirring effect, measuredBy, Gravity Probe B]

Target entity: Gravity Probe B
Context triple: [Lense–Thirring effect, measuredBy, Gravity Probe B]

• A. Gravity Probe B experiment chosen
  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.
• B. STEP (Satellite Test of the Equivalence Principle)
  STEP (Satellite Test of the Equivalence Principle) is a proposed space mission designed to test Einstein’s equivalence principle with extremely high precision by comparing the free fall of different materials in orbit.
• C. 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.
• D. Principia mission
  The Principia mission was British astronaut Tim Peake’s 2015–2016 long-duration flight to the International Space Station, focused on scientific research, education, and public engagement in space science.
• E. Pound–Rebka experiment
  The Pound–Rebka experiment was a landmark 1959 physics test that measured the gravitational redshift of gamma rays in Earth’s gravitational field, providing one of the first precise terrestrial confirmations of general relativity.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.