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: Self-determination era (post-1960s) | Statement: [Cherokee–United States relations, significantEvent, Self-determination era (post-1960s)]

Target entity: Self-determination era (post-1960s)
Context triple: [Cherokee–United States relations, significantEvent, Self-determination era (post-1960s)]

• A. Post-Partitions
  "Post-Partitions" is a seminal serial composition by American composer and theorist Milton Babbitt, exemplifying his highly structured, mathematically rigorous approach to twelve-tone music.
• B. Gabo Reform period
  The Gabo Reform period was a series of sweeping political, social, and institutional reforms in late 19th-century Korea that aimed to modernize the state and reduce traditional feudal structures under King Gojong’s rule.
• C. African decolonization
  African decolonization was the mid-20th-century process by which African territories gained independence from European colonial powers, reshaping the continent’s political and social landscape.
• D. Since Independence
  "Since Independence" is a historical and political work by Rajendra Prasad reflecting on India's journey and challenges after gaining independence.
• E. Age of Nationalism
  The Age of Nationalism was a 19th-century period marked by the rise of nation-states, unification movements, and nationalist ideologies that reshaped the political map of Europe and beyond.
• 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: Self-determination era (post-1960s)
Triple: [Cherokee–United States relations, significantEvent, Self-determination era (post-1960s)]

The Self-determination era (post-1960s) is a period in U.S. policy when Native American tribes, including the Cherokee, gained greater political autonomy, control over their own affairs, and recognition of their sovereign rights after decades of federal assimilation and termination policies.

Target entity: Self-determination era (post-1960s)
Target entity description: The Self-determination era (post-1960s) is a period in U.S. policy when Native American tribes, including the Cherokee, gained greater political autonomy, control over their own affairs, and recognition of their sovereign rights after decades of federal assimilation and termination policies.

• A. Post-Partitions
  "Post-Partitions" is a seminal serial composition by American composer and theorist Milton Babbitt, exemplifying his highly structured, mathematically rigorous approach to twelve-tone music.
• B. Gabo Reform period
  The Gabo Reform period was a series of sweeping political, social, and institutional reforms in late 19th-century Korea that aimed to modernize the state and reduce traditional feudal structures under King Gojong’s rule.
• C. African decolonization
  African decolonization was the mid-20th-century process by which African territories gained independence from European colonial powers, reshaping the continent’s political and social landscape.
• D. Since Independence
  "Since Independence" is a historical and political work by Rajendra Prasad reflecting on India's journey and challenges after gaining independence.
• E. Age of Nationalism
  The Age of Nationalism was a 19th-century period marked by the rise of nation-states, unification movements, and nationalist ideologies that reshaped the political map of Europe and beyond.
• F. None of above. chosen