BE-4

Target entity: BE-4
Context triple: [Vulcan Centaur, firstStageEngine, BE-4]

• A. Rokot
  Rokot is a Russian light-lift orbital launch vehicle derived from the UR-100N (SS-19) intercontinental ballistic missile and used primarily for launching small satellites into low Earth orbit.
• B. Cygnus spacecraft
  The Cygnus spacecraft is an uncrewed commercial cargo vehicle developed by Northrop Grumman to deliver supplies and scientific equipment to the International Space Station.
• C. Long March 5B
  Long March 5B is a heavy-lift Chinese orbital launch vehicle primarily used to carry large modules and payloads for the country’s space station program.
• D. Vostok-K rocket
  The Vostok-K rocket was a Soviet launch vehicle that carried Yuri Gagarin on the first human spaceflight in history.
• E. Soyuz-Fregat
  Soyuz-Fregat is a Russian launch vehicle configuration that combines the Soyuz rocket with the Fregat upper stage to deliver payloads to a wide range of Earth orbits and interplanetary trajectories.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: BE-4
Target entity description: The BE-4 is Blue Origin’s next-generation methane-fueled rocket engine designed to power modern heavy-lift launch vehicles such as United Launch Alliance’s Vulcan rocket.

• A. Rokot
  Rokot is a Russian light-lift orbital launch vehicle derived from the UR-100N (SS-19) intercontinental ballistic missile and used primarily for launching small satellites into low Earth orbit.
• B. Cygnus spacecraft
  The Cygnus spacecraft is an uncrewed commercial cargo vehicle developed by Northrop Grumman to deliver supplies and scientific equipment to the International Space Station.
• C. Long March 5B
  Long March 5B is a heavy-lift Chinese orbital launch vehicle primarily used to carry large modules and payloads for the country’s space station program.
• D. Vostok-K rocket
  The Vostok-K rocket was a Soviet launch vehicle that carried Yuri Gagarin on the first human spaceflight in history.
• E. Soyuz-Fregat
  Soyuz-Fregat is a Russian launch vehicle configuration that combines the Soyuz rocket with the Fregat upper stage to deliver payloads to a wide range of Earth orbits and interplanetary trajectories.
• F. None of above. chosen