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: US Championships 1939 | Statement: [Robert Larimore Riggs, grandSlamSinglesTitles, US Championships 1939]

Target entity: US Championships 1939
Context triple: [Robert Larimore Riggs, grandSlamSinglesTitles, US Championships 1939]

• A. U.S. Championships 1937
  The U.S. Championships 1937 was a major tennis tournament, precursor to the modern US Open, in which German player Gottfried von Cramm reached the men's singles final.
• B. U.S. Nationals
  U.S. Nationals is the premier annual figure skating competition in the United States that determines national champions and often helps select skaters for international events.
• C. New York 1927 chess tournament
  The New York 1927 chess tournament was a major international event featuring many of the world’s leading players of the era, including Aron Nimzowitsch, and is remembered as one of the strongest tournaments of the early 20th century.
• D. French Championships
  The French Championships, now known as the French Open, is one of tennis’s four Grand Slam tournaments, played on clay courts at Roland Garros in Paris.
• E. 1949 British Amateur
  The 1949 British Amateur was a prestigious amateur golf championship held in the United Kingdom, regarded as one of the most important events in amateur golf.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: US Championships 1939
Target entity description: US Championships 1939 was the edition of the American national tennis championships in which Bobby Riggs won the men’s singles title, a precursor to today’s US Open.

• A. U.S. Championships 1937
  The U.S. Championships 1937 was a major tennis tournament, precursor to the modern US Open, in which German player Gottfried von Cramm reached the men's singles final.
• B. U.S. Nationals
  U.S. Nationals is the premier annual figure skating competition in the United States that determines national champions and often helps select skaters for international events.
• C. New York 1927 chess tournament
  The New York 1927 chess tournament was a major international event featuring many of the world’s leading players of the era, including Aron Nimzowitsch, and is remembered as one of the strongest tournaments of the early 20th century.
• D. French Championships
  The French Championships, now known as the French Open, is one of tennis’s four Grand Slam tournaments, played on clay courts at Roland Garros in Paris.
• E. 1949 British Amateur
  The 1949 British Amateur was a prestigious amateur golf championship held in the United Kingdom, regarded as one of the most important events in amateur golf.
• F. None of above. chosen