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: Pike expedition to the headwaters of the Mississippi River | Statement: [Zebulon Pike, notableWork, Pike expedition to the headwaters of the Mississippi River]

Target entity: Pike expedition to the headwaters of the Mississippi River
Context triple: [Zebulon Pike, notableWork, Pike expedition to the headwaters of the Mississippi River]

• A. Lewis and Clark Expedition
  The Lewis and Clark Expedition was an early 19th-century American exploratory journey that mapped and studied the newly acquired western territories, establishing routes and relations that greatly expanded U.S. geographic and scientific knowledge.
• B. Powder River Expedition
  The Powder River Expedition was an 1865 U.S. Army campaign against Plains tribes in present-day Wyoming and Montana, aimed at securing overland travel routes and asserting federal control in the northern Great Plains.
• C. Raynolds Expedition to the Yellowstone and Missouri River headwaters
  The Raynolds Expedition to the Yellowstone and Missouri River headwaters was an 1859–1860 U.S. Army topographical survey that produced some of the earliest detailed scientific and geographic information about the northern Rocky Mountains and the Yellowstone region.
• D. McClure expedition
  The McClure expedition was a mid-19th-century British Arctic voyage led by Robert McClure that is credited with the first traversal of the Northwest Passage, albeit partly by sledge over ice.
• E. Granma expedition
  The Granma expedition was the 1956 seaborne journey in which Fidel Castro and his followers sailed from Mexico to Cuba to launch the guerrilla war that ignited the Cuban Revolution.
• 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: Pike expedition to the headwaters of the Mississippi River
Triple: [Zebulon Pike, notableWork, Pike expedition to the headwaters of the Mississippi River]

The Pike expedition to the headwaters of the Mississippi River was an early 19th-century U.S. exploratory mission led by Zebulon Pike to locate the river’s source and assess the northern Louisiana Purchase region.

Target entity: Pike expedition to the headwaters of the Mississippi River
Target entity description: The Pike expedition to the headwaters of the Mississippi River was an early 19th-century U.S. exploratory mission led by Zebulon Pike to locate the river’s source and assess the northern Louisiana Purchase region.

• A. Lewis and Clark Expedition
  The Lewis and Clark Expedition was an early 19th-century American exploratory journey that mapped and studied the newly acquired western territories, establishing routes and relations that greatly expanded U.S. geographic and scientific knowledge.
• B. Powder River Expedition
  The Powder River Expedition was an 1865 U.S. Army campaign against Plains tribes in present-day Wyoming and Montana, aimed at securing overland travel routes and asserting federal control in the northern Great Plains.
• C. Raynolds Expedition to the Yellowstone and Missouri River headwaters
  The Raynolds Expedition to the Yellowstone and Missouri River headwaters was an 1859–1860 U.S. Army topographical survey that produced some of the earliest detailed scientific and geographic information about the northern Rocky Mountains and the Yellowstone region.
• D. McClure expedition
  The McClure expedition was a mid-19th-century British Arctic voyage led by Robert McClure that is credited with the first traversal of the Northwest Passage, albeit partly by sledge over ice.
• E. Granma expedition
  The Granma expedition was the 1956 seaborne journey in which Fidel Castro and his followers sailed from Mexico to Cuba to launch the guerrilla war that ignited the Cuban Revolution.
• F. None of above. chosen