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: Preliminary Treaty of London on Belgian independence | Statement: [Treaty of London (1831), alsoKnownAs, Preliminary Treaty of London on Belgian independence]

Target entity: Preliminary Treaty of London on Belgian independence
Context triple: [Treaty of London (1831), alsoKnownAs, Preliminary Treaty of London on Belgian independence]

• A. Treaties of Belgium
  Treaties of Belgium are international agreements involving Belgium that have helped define its borders, sovereignty, and diplomatic relations since its independence in the 19th century.
• B. Treaty of Brussels
  The Treaty of Brussels was a 1948 mutual defense and cooperation agreement among Western European countries that laid important groundwork for both NATO and later European integration.
• C. Treaty of The Hague (1795)
  The Treaty of The Hague (1795) was an agreement during the French Revolutionary Wars in which the Batavian Republic, replacing the Dutch Republic, became a French ally and ceded territory and financial support to France.
• D. Plombières Agreement
  The Plombières Agreement was a secret 1858 understanding between France and the Kingdom of Sardinia in which Napoleon III informally promised military support to Count Cavour against Austria in exchange for territorial concessions in Italy, paving the way for Italian unification and later formalized in the Treaty of Turin.
• E. Leuenberg Agreement
  The Leuenberg Agreement is a landmark 1973 ecumenical accord that established full church fellowship among many European Lutheran, Reformed, and United Protestant churches by resolving key doctrinal disputes from the Reformation era.
• 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: Preliminary Treaty of London on Belgian independence
Triple: [Treaty of London (1831), alsoKnownAs, Preliminary Treaty of London on Belgian independence]

The Preliminary Treaty of London on Belgian independence was an 1831 diplomatic agreement in which the major European powers recognized and defined the new Kingdom of Belgium’s separation from the Netherlands.

Target entity: Preliminary Treaty of London on Belgian independence
Target entity description: The Preliminary Treaty of London on Belgian independence was an 1831 diplomatic agreement in which the major European powers recognized and defined the new Kingdom of Belgium’s separation from the Netherlands.

• A. Treaties of Belgium
  Treaties of Belgium are international agreements involving Belgium that have helped define its borders, sovereignty, and diplomatic relations since its independence in the 19th century.
• B. Treaty of Brussels
  The Treaty of Brussels was a 1948 mutual defense and cooperation agreement among Western European countries that laid important groundwork for both NATO and later European integration.
• C. Treaty of The Hague (1795)
  The Treaty of The Hague (1795) was an agreement during the French Revolutionary Wars in which the Batavian Republic, replacing the Dutch Republic, became a French ally and ceded territory and financial support to France.
• D. Plombières Agreement
  The Plombières Agreement was a secret 1858 understanding between France and the Kingdom of Sardinia in which Napoleon III informally promised military support to Count Cavour against Austria in exchange for territorial concessions in Italy, paving the way for Italian unification and later formalized in the Treaty of Turin.
• E. Leuenberg Agreement
  The Leuenberg Agreement is a landmark 1973 ecumenical accord that established full church fellowship among many European Lutheran, Reformed, and United Protestant churches by resolving key doctrinal disputes from the Reformation era.
• F. None of above. chosen