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: Einstein–Szilárd letter | Statement: [Einstein–Szilárd collaboration, relatedTo, Einstein–Szilárd letter]

Target entity: Einstein–Szilárd letter
Context triple: [Einstein–Szilárd collaboration, relatedTo, Einstein–Szilárd letter]

• A. Einstein–Szilard letter chosen
  The Einstein–Szilard letter was a 1939 letter to U.S. President Franklin D. Roosevelt, drafted by Leo Szilard and signed by Albert Einstein, warning about the potential for Nazi Germany to develop atomic weapons and urging the United States to begin its own nuclear research.
• B. Einstein–Szilárd collaboration
  The Einstein–Szilárd collaboration was a scientific partnership between Albert Einstein and Leo Szilárd in the late 1920s and early 1930s focused on developing innovative technologies, most notably an absorption refrigerator with no moving parts.
• C. Frisch–Peierls memorandum
  The Frisch–Peierls memorandum was a pivotal 1940 document by physicists Otto Frisch and Rudolf Peierls that first outlined the feasibility of a small, practical uranium-based atomic bomb, helping to catalyze British and later Allied nuclear weapons research.
• D. Szilard petition
  The Szilard petition was a 1945 document signed by Manhattan Project scientists urging the U.S. government to demonstrate the atomic bomb’s power before using it on Japanese cities, reflecting early ethical concerns about nuclear weapons.
• E. MAUD Report
  The MAUD Report was a secret 1941 British scientific assessment that concluded an atomic bomb was feasible and helped spur the U.S. Manhattan Project.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.