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: Treaty of San Ildefonso (1800) | Statement: [Charles IV of Spain, notableEvent, Treaty of San Ildefonso (1800)]

Target entity: Treaty of San Ildefonso (1800)
Context triple: [Charles IV of Spain, notableEvent, Treaty of San Ildefonso (1800)]

• A. Treaty of San Ildefonso (1796)
  The Treaty of San Ildefonso (1796) was an alliance agreement in which Spain, under Charles IV, joined revolutionary France against Great Britain during the French Revolutionary Wars.
• B. Treaty of Zaragoza
  The Treaty of Zaragoza was a 1529 agreement between Spain and Portugal that defined their spheres of influence in Asia and the Pacific by establishing an antimeridian to the earlier Treaty of Tordesillas.
• C. Treaties of Córdoba
  The Treaties of Córdoba were the 1821 agreements between Spanish royalist authorities and Mexican insurgents that recognized Mexico’s independence and laid the groundwork for its first constitutional order.
• D. Treaty of St. Louis (1804)
  The Treaty of St. Louis (1804) was an agreement in which Sauk and Meskwaki leaders, under disputed circumstances, ceded vast lands in Illinois and Missouri to the United States, later fueling tensions that led to the Black Hawk War.
• E. Treaties of Velasco
  The Treaties of Velasco were 1836 agreements between the newly independent Republic of Texas and captured Mexican president Antonio López de Santa Anna that sought to end hostilities after the Battle of San Jacinto and define Texas–Mexico relations.
• 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: Treaty of San Ildefonso (1800)
Triple: [Charles IV of Spain, notableEvent, Treaty of San Ildefonso (1800)]

The Treaty of San Ildefonso (1800) was a secret agreement by which Spain retroceded the vast territory of Louisiana to France, reshaping the balance of power in North America and paving the way for the Louisiana Purchase.

Target entity: Treaty of San Ildefonso (1800)
Target entity description: The Treaty of San Ildefonso (1800) was a secret agreement by which Spain retroceded the vast territory of Louisiana to France, reshaping the balance of power in North America and paving the way for the Louisiana Purchase.

• A. Treaty of San Ildefonso (1796)
  The Treaty of San Ildefonso (1796) was an alliance agreement in which Spain, under Charles IV, joined revolutionary France against Great Britain during the French Revolutionary Wars.
• B. Treaty of Zaragoza
  The Treaty of Zaragoza was a 1529 agreement between Spain and Portugal that defined their spheres of influence in Asia and the Pacific by establishing an antimeridian to the earlier Treaty of Tordesillas.
• C. Treaties of Córdoba
  The Treaties of Córdoba were the 1821 agreements between Spanish royalist authorities and Mexican insurgents that recognized Mexico’s independence and laid the groundwork for its first constitutional order.
• D. Treaty of St. Louis (1804)
  The Treaty of St. Louis (1804) was an agreement in which Sauk and Meskwaki leaders, under disputed circumstances, ceded vast lands in Illinois and Missouri to the United States, later fueling tensions that led to the Black Hawk War.
• E. Treaties of Velasco
  The Treaties of Velasco were 1836 agreements between the newly independent Republic of Texas and captured Mexican president Antonio López de Santa Anna that sought to end hostilities after the Battle of San Jacinto and define Texas–Mexico relations.
• F. None of above. chosen