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–British Common Defense Pact | Statement: [1939 Defensive War, legalBasis, Polish–British Common Defense Pact]

Target entity: Polish–British Common Defense Pact
Context triple: [1939 Defensive War, legalBasis, Polish–British Common Defense Pact]

• A. 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.
• B. Sikorski–Mayski agreement
  The Sikorski–Mayski agreement was a 1941 pact between the Polish government-in-exile and the Soviet Union that restored diplomatic relations and led to an "amnesty" for many Polish citizens imprisoned or deported in the USSR during World War II.
• C. Polish Round Table Agreement
  The Polish Round Table Agreement was a landmark 1989 political accord between Poland’s communist government and opposition forces that initiated a peaceful transition from one-party rule to semi-free elections and ultimately to democracy.
• D. German–Polish Non-Aggression Pact
  The German–Polish Non-Aggression Pact was a 1934 treaty between Nazi Germany and Poland intended to guarantee mutual non-aggression, which was effectively nullified when Germany invaded Poland in 1939.
• E. Polish–Romanian alliance
  The Polish–Romanian alliance was an interwar military and political partnership between Poland and Romania aimed primarily at mutual defense against potential aggression from the Soviet Union and other regional threats.
• 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–British Common Defense Pact
Triple: [1939 Defensive War, legalBasis, Polish–British Common Defense Pact]

The Polish–British Common Defense Pact was a 1939 mutual assistance treaty under which the United Kingdom pledged to come to Poland’s aid in the event of German aggression, forming a key diplomatic trigger for Britain’s entry into World War II.

Target entity: Polish–British Common Defense Pact
Target entity description: The Polish–British Common Defense Pact was a 1939 mutual assistance treaty under which the United Kingdom pledged to come to Poland’s aid in the event of German aggression, forming a key diplomatic trigger for Britain’s entry into World War II.

• A. 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.
• B. Sikorski–Mayski agreement
  The Sikorski–Mayski agreement was a 1941 pact between the Polish government-in-exile and the Soviet Union that restored diplomatic relations and led to an "amnesty" for many Polish citizens imprisoned or deported in the USSR during World War II.
• C. Polish Round Table Agreement
  The Polish Round Table Agreement was a landmark 1989 political accord between Poland’s communist government and opposition forces that initiated a peaceful transition from one-party rule to semi-free elections and ultimately to democracy.
• D. German–Polish Non-Aggression Pact
  The German–Polish Non-Aggression Pact was a 1934 treaty between Nazi Germany and Poland intended to guarantee mutual non-aggression, which was effectively nullified when Germany invaded Poland in 1939.
• E. Polish–Romanian alliance
  The Polish–Romanian alliance was an interwar military and political partnership between Poland and Romania aimed primarily at mutual defense against potential aggression from the Soviet Union and other regional threats.
• F. None of above. chosen