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: river Oker | Statement: [Altenau, locatedOn, river Oker]

Target entity: river Oker
Context triple: [Altenau, locatedOn, river Oker]

• A. River Ock
  River Ock is a small river in Oxfordshire, England, that flows through the Vale of White Horse before joining the River Thames.
• B. Inn River
  The Inn River is a major Alpine river in Central Europe that flows through Switzerland, Austria, and Germany before joining the Danube.
• C. Örtze River
  The Örtze River is a river in Lower Saxony, Germany, known for flowing through the Lüneburg Heath before joining the Aller.
• D. Warnow River
  The Warnow River is a waterway in northeastern Germany that flows through the city of Rostock before emptying into the Baltic Sea.
• E. Erft River
  The Erft River is a tributary of the Rhine in western Germany, flowing through North Rhine-Westphalia and known for passing historic towns and former mining areas before joining the Rhine near Neuss.
• 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: river Oker
Triple: [Altenau, locatedOn, river Oker]

The river Oker is a watercourse in Lower Saxony, Germany, that flows from the Harz Mountains through towns such as Altenau before joining the Aller River.

Target entity: river Oker
Target entity description: The river Oker is a watercourse in Lower Saxony, Germany, that flows from the Harz Mountains through towns such as Altenau before joining the Aller River.

• A. River Ock
  River Ock is a small river in Oxfordshire, England, that flows through the Vale of White Horse before joining the River Thames.
• B. Inn River
  The Inn River is a major Alpine river in Central Europe that flows through Switzerland, Austria, and Germany before joining the Danube.
• C. Örtze River
  The Örtze River is a river in Lower Saxony, Germany, known for flowing through the Lüneburg Heath before joining the Aller.
• D. Warnow River
  The Warnow River is a waterway in northeastern Germany that flows through the city of Rostock before emptying into the Baltic Sea.
• E. Erft River
  The Erft River is a tributary of the Rhine in western Germany, flowing through North Rhine-Westphalia and known for passing historic towns and former mining areas before joining the Rhine near Neuss.
• F. None of above. chosen