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: de Sitter effect | Statement: [Willem de Sitter, hasConceptNamedAfter, de Sitter effect]

Target entity: de Sitter effect
Context triple: [Willem de Sitter, hasConceptNamedAfter, de Sitter effect]

• A. 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).
• B. Tolman–Ehrenfest effect
  The Tolman–Ehrenfest effect is a relativistic thermodynamic phenomenon stating that, in a system at thermal equilibrium within a gravitational field, temperature varies with gravitational potential so that hotter regions occur deeper in the gravitational well.
• C. Gödel metric
  The Gödel metric is a solution to Einstein's field equations that describes a rotating universe allowing for closed timelike curves and thus the theoretical possibility of time travel.
• D. Kerr metric
  The Kerr metric is the exact general relativity solution describing the spacetime geometry around a rotating, uncharged black hole.
• E. Einstein's elevator
  Einstein's elevator is a famous thought experiment devised by Albert Einstein to illustrate the equivalence between gravitational and inertial effects, forming a key conceptual basis for general relativity.
• 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: de Sitter effect
Triple: [Willem de Sitter, hasConceptNamedAfter, de Sitter effect]

The de Sitter effect is a relativistic phenomenon in celestial mechanics describing how general relativity alters the motion and precession of orbiting bodies in a gravitational field.

Target entity: de Sitter effect
Target entity description: The de Sitter effect is a relativistic phenomenon in celestial mechanics describing how general relativity alters the motion and precession of orbiting bodies in a gravitational field.

• A. 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).
• B. Tolman–Ehrenfest effect
  The Tolman–Ehrenfest effect is a relativistic thermodynamic phenomenon stating that, in a system at thermal equilibrium within a gravitational field, temperature varies with gravitational potential so that hotter regions occur deeper in the gravitational well.
• C. Gödel metric
  The Gödel metric is a solution to Einstein's field equations that describes a rotating universe allowing for closed timelike curves and thus the theoretical possibility of time travel.
• D. Kerr metric
  The Kerr metric is the exact general relativity solution describing the spacetime geometry around a rotating, uncharged black hole.
• E. Einstein's elevator
  Einstein's elevator is a famous thought experiment devised by Albert Einstein to illustrate the equivalence between gravitational and inertial effects, forming a key conceptual basis for general relativity.
• F. None of above. chosen