Triple

Target class: American singing group
Context triple: [The McGuire Sisters, instanceOf, American singing group]

• A. American pop group
  An American pop group is a musical ensemble originating from the United States that primarily performs popular music aimed at mainstream audiences, often characterized by catchy melodies, polished production, and a strong commercial focus.
• B. American close-harmony group chosen
  An American close-harmony group is an ensemble of singers, typically two to four, who perform tightly coordinated vocal parts with minimal intervals between them to create a rich, blended harmonic sound characteristic of U.S. popular and traditional music styles.
• C. American R&B group
  An American R&B group is a U.S.-based musical ensemble that performs rhythm and blues music, typically blending soulful vocals, harmonies, and contemporary production to create emotionally expressive songs.
• D. American jazz group
  An American jazz group is an ensemble of musicians based in the United States that performs jazz music, often blending improvisation, swing rhythms, and diverse stylistic influences from the American jazz tradition.
• E. R&B music group
  An R&B music group is a collective of vocalists and/or instrumentalists who perform rhythm and blues music, typically blending soulful vocals, groove-oriented rhythms, and elements of pop, hip-hop, and soul.
• F. None of above.