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: Kei River | Statement: [eastern frontier of the Cape Colony, associatedWith, Kei River]

Target entity: Kei River
Context triple: [eastern frontier of the Cape Colony, associatedWith, Kei River]

• A. Kowai River
  The Kowai River is a smaller river in the Canterbury region of New Zealand that feeds into the larger Waimakariri River system.
• B. Kerio River
  The Kerio River is a major river in Kenya that drains the western highlands and flows northward through the Kerio Valley before emptying into Lake Turkana.
• C. Ruak River
  The Ruak River is a tributary of the Mekong in Southeast Asia that forms part of the natural boundary between Thailand and Myanmar in the Golden Triangle region.
• D. Toa River
  The Toa River is a major river in eastern Cuba known for its lush surrounding rainforest and high biodiversity near the city of Baracoa.
• E. Setit River
  The Setit River is a major river in the Horn of Africa that flows through Ethiopia and Eritrea as part of the Nile basin.
• 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: Kei River
Triple: [eastern frontier of the Cape Colony, associatedWith, Kei River]

The Kei River is a major river in South Africa’s Eastern Cape that historically marked the eastern boundary between the Cape Colony and neighboring Xhosa territories.

Target entity: Kei River
Target entity description: The Kei River is a major river in South Africa’s Eastern Cape that historically marked the eastern boundary between the Cape Colony and neighboring Xhosa territories.

• A. Kowai River
  The Kowai River is a smaller river in the Canterbury region of New Zealand that feeds into the larger Waimakariri River system.
• B. Kerio River
  The Kerio River is a major river in Kenya that drains the western highlands and flows northward through the Kerio Valley before emptying into Lake Turkana.
• C. Ruak River
  The Ruak River is a tributary of the Mekong in Southeast Asia that forms part of the natural boundary between Thailand and Myanmar in the Golden Triangle region.
• D. Toa River
  The Toa River is a major river in eastern Cuba known for its lush surrounding rainforest and high biodiversity near the city of Baracoa.
• E. Setit River
  The Setit River is a major river in the Horn of Africa that flows through Ethiopia and Eritrea as part of the Nile basin.
• F. None of above. chosen