Triple

Target entity: Leibniz’s Law of the Indiscernibility of Identicals
Context triple: [Masked man paradox, relatedConcept, Leibniz’s Law of the Indiscernibility of Identicals]

• A. identity of indiscernibles chosen
  The identity of indiscernibles is a metaphysical principle, associated with Leibniz, stating that no two distinct entities can share all the same properties.
• B. The Logical Structure of the World
  The Logical Structure of the World is Rudolf Carnap’s seminal 1928 work in which he develops a rigorous, formal reconstruction of all scientific concepts from a phenomenalist basis, serving as a foundational text of logical positivism.
• C. On the Principles of Logic
  On the Principles of Logic is a philosophical work that systematically examines the foundations, structure, and methods of logical reasoning.
• D. On the Fourfold Root of the Principle of Sufficient Reason
  On the Fourfold Root of the Principle of Sufficient Reason is a foundational philosophical treatise by Arthur Schopenhauer that analyzes the different ways in which the principle of sufficient reason structures human knowledge and experience.
• E. Hume’s Principle (derivable, not postulated)
  Hume’s Principle (derivable, not postulated) is the numerical equivalence principle in Frege’s logical system that is obtained as a theorem rather than assumed as a foundational axiom.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.