Stalwart-class ocean surveillance ships

Target entity: Stalwart-class ocean surveillance ships
Context triple: [USNS Capable, category, Stalwart-class ocean surveillance ships]

• A. Courageous-class ships
  Courageous-class ships were a group of British Royal Navy warships originally built as large light cruisers during World War I and later converted into aircraft carriers.
• B. Saam‑class frigate
  The Saam-class frigate was a British-built class of guided-missile frigates designed in the 1960s for Iran, notable for its advanced weaponry and service in the Imperial Iranian Navy.
• C. Valour-class frigates
  Valour-class frigates are a class of modern multi-role warships operated by the South African Navy, designed for anti-air, anti-surface, and anti-submarine warfare.
• D. Fearless-class patrol vessel
  The Fearless-class patrol vessel is a class of coastal patrol ships designed for maritime security, surveillance, and patrol operations, primarily operated by the Republic of Singapore Navy.
• E. Koni-class frigate
  The Koni-class frigate is a Soviet-designed anti-submarine and patrol warship built primarily for export to allied navies during the Cold War.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Stalwart-class ocean surveillance ships
Target entity description: Stalwart-class ocean surveillance ships are U.S. Navy auxiliary vessels designed primarily for anti-submarine warfare support and undersea surveillance using towed array sonar systems.

• A. Courageous-class ships
  Courageous-class ships were a group of British Royal Navy warships originally built as large light cruisers during World War I and later converted into aircraft carriers.
• B. Saam‑class frigate
  The Saam-class frigate was a British-built class of guided-missile frigates designed in the 1960s for Iran, notable for its advanced weaponry and service in the Imperial Iranian Navy.
• C. Valour-class frigates
  Valour-class frigates are a class of modern multi-role warships operated by the South African Navy, designed for anti-air, anti-surface, and anti-submarine warfare.
• D. Fearless-class patrol vessel
  The Fearless-class patrol vessel is a class of coastal patrol ships designed for maritime security, surveillance, and patrol operations, primarily operated by the Republic of Singapore Navy.
• E. Koni-class frigate
  The Koni-class frigate is a Soviet-designed anti-submarine and patrol warship built primarily for export to allied navies during the Cold War.
• F. None of above. chosen