Triple

Target entity: Chartism
Context triple: [James Bronterre O'Brien, movement, Chartism]

• A. Chartism chosen
  Chartism was a 19th-century British working-class political movement that campaigned for democratic reforms such as universal male suffrage and parliamentary representation.
• B. Women's Social and Political Union
  The Women's Social and Political Union was a leading militant British suffragette organization founded in 1903 that campaigned aggressively for women's right to vote.
• C. Chartist Convention of 1839
  The Chartist Convention of 1839 was a national assembly of British working-class reformers that coordinated the early Chartist movement’s campaign for political rights and the People’s Charter.
• D. British reform movement
  The British reform movement was a broad 19th-century campaign for political, social, and economic changes in the United Kingdom, including expanded suffrage, parliamentary reform, and improved civil rights.
• E. Women's Political Union
  The Women's Political Union was an early 20th-century American suffrage organization that campaigned vigorously for women's right to vote through parades, rallies, and political organizing.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.