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: Eddington–Finkelstein coordinates | Statement: [Reissner–Nordström metric, canBeExtendedBy, Eddington–Finkelstein coordinates]

Target entity: Eddington–Finkelstein coordinates
Context triple: [Reissner–Nordström metric, canBeExtendedBy, Eddington–Finkelstein coordinates]

• A. Eddington–Finkelstein coordinates chosen
  Eddington–Finkelstein coordinates are a coordinate system in general relativity that smoothly covers a black hole’s event horizon, avoiding the coordinate singularity present in standard Schwarzschild coordinates.
• B. Kruskal–Szekeres coordinates
  Kruskal–Szekeres coordinates are a maximal extension coordinate system used in general relativity to smoothly describe the entire spacetime of a Schwarzschild black hole, including regions across the event horizon.
• C. Schwarzschild coordinates
  Schwarzschild coordinates are a spherical coordinate system used in general relativity to describe the spacetime geometry outside a spherically symmetric, non-rotating mass, such as a static black hole.
• D. Boyer–Lindquist coordinates
  Boyer–Lindquist coordinates are a spheroidal coordinate system commonly used in general relativity to express the Kerr solution describing the spacetime around a rotating black hole.
• E. Kerr–Schild coordinates
  Kerr–Schild coordinates are a coordinate system used to express the Kerr spacetime metric in a form that highlights its structure as a perturbation of flat Minkowski space along a principal null direction.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.