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: Upper Mississippi River system | Statement: [Alton Lock and Dam, partOf, Upper Mississippi River system]

Target entity: Upper Mississippi River system
Context triple: [Alton Lock and Dam, partOf, Upper Mississippi River system]

• A. Middle Mississippi River basin
  The Middle Mississippi River basin is the central portion of the Mississippi River’s drainage system, collecting waters from the upper Midwest before they flow into the lower Mississippi region.
• B. Upper Mississippi Valley chosen
  The Upper Mississippi Valley is a region along the upper course of the Mississippi River, encompassing parts of several Midwestern U.S. states and historically significant for trade, settlement, and military activity.
• C. Mississippi River
  The Mississippi River is one of the longest and most significant rivers in the United States, serving as a major waterway for transportation, commerce, and drainage across much of the central continent.
• D. Mississippi River basin
  The Mississippi River basin is the vast drainage area of the Mississippi River system, encompassing much of the central United States and parts of Canada and covering one of the largest river basins in the world.
• E. Lower Mississippi River basin
  The Lower Mississippi River basin is the southernmost portion of the Mississippi River drainage system, encompassing the river’s broad floodplain and delta region as it flows toward and empties into the Gulf of Mexico.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.