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: Rivas isthmus | Statement: [Depresión Nicaragüense, contains, Rivas isthmus]

Target entity: Rivas isthmus
Context triple: [Depresión Nicaragüense, contains, Rivas isthmus]

• A. Isthmus of Tehuantepec
  The Isthmus of Tehuantepec is the narrowest part of Mexico between the Gulf of Mexico and the Pacific Ocean, historically significant as a trade and transit corridor and culturally notable for its Indigenous communities.
• B. Ofqui Isthmus
  The Ofqui Isthmus is a remote, low-lying land bridge in southern Chile that separates the Gulf of Penas from the Moraleda Channel and forms part of a tectonically active region shaped by the Liquiñe-Ofqui Fault Zone.
• C. Isthmus Mixe
  Isthmus Mixe is an indigenous Mixe language spoken in the Isthmus of Tehuantepec region of Oaxaca, Mexico.
• D. Isthmus of Panama
  The Isthmus of Panama is the narrow strip of land in Central America that links North and South America and separates the Caribbean Sea from the Pacific Ocean.
• E. Mavis Grind isthmus
  Mavis Grind isthmus is a narrow strip of land in Shetland, Scotland, notable for almost connecting the Atlantic Ocean and the North Sea at one of the islands’ closest points.
• 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: Rivas isthmus
Triple: [Depresión Nicaragüense, contains, Rivas isthmus]

Rivas Isthmus is a narrow land corridor in southwestern Nicaragua that separates the Pacific Ocean from Lake Nicaragua and serves as a key geographic link within the Nicaraguan Depression.

Target entity: Rivas isthmus
Target entity description: Rivas Isthmus is a narrow land corridor in southwestern Nicaragua that separates the Pacific Ocean from Lake Nicaragua and serves as a key geographic link within the Nicaraguan Depression.

• A. Isthmus of Tehuantepec
  The Isthmus of Tehuantepec is the narrowest part of Mexico between the Gulf of Mexico and the Pacific Ocean, historically significant as a trade and transit corridor and culturally notable for its Indigenous communities.
• B. Ofqui Isthmus
  The Ofqui Isthmus is a remote, low-lying land bridge in southern Chile that separates the Gulf of Penas from the Moraleda Channel and forms part of a tectonically active region shaped by the Liquiñe-Ofqui Fault Zone.
• C. Isthmus Mixe
  Isthmus Mixe is an indigenous Mixe language spoken in the Isthmus of Tehuantepec region of Oaxaca, Mexico.
• D. Isthmus of Panama
  The Isthmus of Panama is the narrow strip of land in Central America that links North and South America and separates the Caribbean Sea from the Pacific Ocean.
• E. Mavis Grind isthmus
  Mavis Grind isthmus is a narrow strip of land in Shetland, Scotland, notable for almost connecting the Atlantic Ocean and the North Sea at one of the islands’ closest points.
• F. None of above. chosen