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: Plains Indian coalition | Statement: [Battle of Adobe Walls (1874), hasCombatant, Plains Indian coalition]

Target entity: Plains Indian coalition
Context triple: [Battle of Adobe Walls (1874), hasCombatant, Plains Indian coalition]

• A. Lakota-Northern Cheyenne alliance
  The Lakota–Northern Cheyenne alliance was a coalition of Plains tribes that fought together against the United States during the Great Sioux War of 1876–77, including major battles such as the Battle of the Little Bighorn.
• B. Northwest Indian Confederacy
  The Northwest Indian Confederacy was a late 18th-century alliance of Native American tribes in the Great Lakes and Ohio Valley region that united to resist United States expansion into their territories.
• C. Indians of All Tribes
  Indians of All Tribes was a Native American activist group best known for organizing the 1969–1971 occupation of Alcatraz Island to demand Indigenous rights and sovereignty.
• D. Great Sioux Nation
  The Great Sioux Nation is a confederation of Lakota, Dakota, and Nakota Sioux tribes historically occupying a vast territory of the Northern Great Plains and known for their rich cultural traditions and resistance to U.S. expansion.
• E. Plains Indians chosen
  The Plains Indians were diverse Native American peoples of the Great Plains known for their nomadic buffalo-hunting cultures, horse-centered lifestyles, and distinctive tipi dwellings.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.