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: Polish ultimatum to Czechoslovakia | Statement: [Zaolzie annexation of 1938, precededBy, Polish ultimatum to Czechoslovakia]

Target entity: Polish ultimatum to Czechoslovakia
Context triple: [Zaolzie annexation of 1938, precededBy, Polish ultimatum to Czechoslovakia]

• A. Gleiwitz incident
  The Gleiwitz incident was a staged 1939 false-flag attack by Nazi Germany on a German radio station, used as propaganda to justify the invasion of Poland and the start of World War II.
• B. Poland–Soviet Union non-aggression pact
  The Poland–Soviet Union non-aggression pact was a 1932 treaty in which the Second Polish Republic and the Soviet Union pledged to resolve disputes peacefully and refrain from military aggression against each other in the tense interwar period.
• C. Munich Agreement
  The Munich Agreement was a 1938 settlement permitting Nazi Germany’s annexation of the Sudetenland from Czechoslovakia, long regarded as a prime example of failed appeasement before World War II.
• D. German annexation of the Free City of Danzig
  The German annexation of the Free City of Danzig was the 1939 incorporation of the semi-autonomous Baltic port city into Nazi Germany, an aggressive move that helped trigger the outbreak of World War II.
• E. German occupation of Czechoslovakia
  The German occupation of Czechoslovakia was the 1938–1939 takeover and subsequent control of Czech and Slovak territories by Nazi Germany, marking a key step in its expansion that led directly into World War II.
• 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: Polish ultimatum to Czechoslovakia
Triple: [Zaolzie annexation of 1938, precededBy, Polish ultimatum to Czechoslovakia]

The Polish ultimatum to Czechoslovakia was a 1938 diplomatic demand by Poland that forced Czechoslovakia to cede the disputed Zaolzie region, exploiting the Munich Crisis and contributing to the dismemberment of the Czechoslovak state.

Target entity: Polish ultimatum to Czechoslovakia
Target entity description: The Polish ultimatum to Czechoslovakia was a 1938 diplomatic demand by Poland that forced Czechoslovakia to cede the disputed Zaolzie region, exploiting the Munich Crisis and contributing to the dismemberment of the Czechoslovak state.

• A. Gleiwitz incident
  The Gleiwitz incident was a staged 1939 false-flag attack by Nazi Germany on a German radio station, used as propaganda to justify the invasion of Poland and the start of World War II.
• B. Poland–Soviet Union non-aggression pact
  The Poland–Soviet Union non-aggression pact was a 1932 treaty in which the Second Polish Republic and the Soviet Union pledged to resolve disputes peacefully and refrain from military aggression against each other in the tense interwar period.
• C. Munich Agreement
  The Munich Agreement was a 1938 settlement permitting Nazi Germany’s annexation of the Sudetenland from Czechoslovakia, long regarded as a prime example of failed appeasement before World War II.
• D. German annexation of the Free City of Danzig
  The German annexation of the Free City of Danzig was the 1939 incorporation of the semi-autonomous Baltic port city into Nazi Germany, an aggressive move that helped trigger the outbreak of World War II.
• E. German occupation of Czechoslovakia
  The German occupation of Czechoslovakia was the 1938–1939 takeover and subsequent control of Czech and Slovak territories by Nazi Germany, marking a key step in its expansion that led directly into World War II.
• F. None of above. chosen