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: Negro leagues era | Statement: [Rube Foster, era, Negro leagues era]

Target entity: Negro leagues era
Context triple: [Rube Foster, era, Negro leagues era]

• A. Negro Leagues chosen
  The Negro Leagues were a collection of professional African American baseball leagues in the United States that operated during the era of racial segregation and showcased many of the sport’s greatest talents before integration into Major League Baseball.
• B. Dead-ball era
  The Dead-ball era was a period in early 20th-century baseball characterized by low-scoring games, a lack of home runs, and an emphasis on pitching, defense, and small-ball tactics.
• C. American Negro League
  The American Negro League was a short-lived professional Negro league baseball organization that operated in the United States in the late 1920s as part of the broader system of segregated Black baseball.
• D. Negro World Series
  The Negro World Series was the championship series of Negro league baseball in the United States, pitting the top teams from the major Black professional leagues against each other to determine the overall champion.
• E. Negro National League
  The Negro National League was a pioneering professional baseball league formed in 1920 that became the cornerstone of Black baseball in the United States during the era of racial segregation.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.