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: Marais des Cygnes massacre | Statement: [Marais des Cygnes River, hasHistoricalEvent, Marais des Cygnes massacre]

Target entity: Marais des Cygnes massacre
Context triple: [Marais des Cygnes River, hasHistoricalEvent, Marais des Cygnes massacre]

• A. Marais des Cygnes massacre chosen
  The Marais des Cygnes massacre was an 1858 attack in Kansas Territory in which pro-slavery militants executed a group of free-state men, becoming one of the most notorious episodes of violence in the Bleeding Kansas conflict.
• B. Indian Creek massacre
  The Indian Creek massacre was an 1832 attack during the Black Hawk War in which a group of Potawatomi and Sauk warriors killed and captured settlers near present-day Earlville, Illinois.
• C. Pottawatomie massacre
  The Pottawatomie massacre was an 1856 episode of anti-slavery violence in Kansas in which abolitionist John Brown and his followers killed five pro-slavery settlers, escalating tensions that helped lead to the American Civil War.
• D. Fort Robinson massacre
  The Fort Robinson massacre was a violent 1879 U.S. Army attack and subsequent deaths of Northern Cheyenne people imprisoned at Fort Robinson, Nebraska, during their attempt to escape confinement and return to their homeland.
• E. Baxter Springs Massacre
  The Baxter Springs Massacre was an 1863 Civil War attack in which Confederate guerrillas led by William Quantrill ambushed and killed a large number of Union soldiers and civilians near Baxter Springs, Kansas.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.