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: maximally extended Kruskal–Szekeres spacetime | Statement: [Schwarzschild black hole, hasCausalStructure, maximally extended Kruskal–Szekeres spacetime]

Target entity: maximally extended Kruskal–Szekeres spacetime
Context triple: [Schwarzschild black hole, hasCausalStructure, maximally extended Kruskal–Szekeres spacetime]

• A. Kruskal–Szekeres coordinates chosen
  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.
• B. Eddington–Finkelstein coordinates
  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.
• C. Schwarzschild black hole
  A Schwarzschild black hole is the simplest theoretical black hole solution in general relativity, describing a static, spherically symmetric, non-rotating, uncharged mass with an event horizon defined by the Schwarzschild radius.
• D. The Mathematical Theory of Black Holes
  The Mathematical Theory of Black Holes is a landmark monograph that presents a rigorous, comprehensive treatment of the physics and mathematics underlying black hole solutions in general relativity.
• E. de Sitter spacetime
  de Sitter spacetime is a maximally symmetric, curved solution of general relativity that models an expanding universe dominated by a positive cosmological constant (dark energy).
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target predicate: hasCausalStructure
Context triple: [Schwarzschild black hole, hasCausalStructure, maximally extended Kruskal–Szekeres spacetime]

• A. hasCause
  Indicates that one entity is the reason for, or brings about, the occurrence or existence of another entity or event.
• B. hasStructureType chosen
  Indicates that an entity possesses or is classified by a specific structural type or configuration.
• C. isBackboneOf
  Indicates that one entity forms the main supporting structure or central framework upon which another entity fundamentally depends.
• D. hasConsequence
  Indicates that one event, action, or condition leads to or results in another as its outcome or effect.
• E. hasDependency
  Indicates that one entity relies on or requires another entity in order to function, exist, or be fulfilled.
• F. None of above.