Unit 4 reactor building

Target entity: Unit 4 reactor building
Context triple: [Fukushima Daiichi Nuclear Power Plant, hydrogenExplosionsOccurredIn, Unit 4 reactor building]

• A. Unit 3 reactor building
  The Unit 3 reactor building at the Fukushima Daiichi Nuclear Power Plant is one of the severely damaged reactor structures from the 2011 disaster, known for suffering a catastrophic explosion and major radioactive release.
• B. Reactor No. 4
  Reactor No. 4 was the RBMK nuclear reactor at the Chernobyl Nuclear Power Plant whose catastrophic explosion in 1986 caused one of the worst nuclear disasters in history.
• C. K Reactor
  K Reactor is a decommissioned nuclear production reactor at the Savannah River Site in South Carolina that was used primarily for producing weapons-grade materials during the Cold War.
• D. NRU reactor
  The NRU reactor was a Canadian research nuclear reactor at Chalk River Laboratories known for producing medical isotopes and supporting materials testing and reactor physics research.
• E. D Reactor
  D Reactor was one of the early plutonium production reactors at the Hanford Site in Washington, built during the Manhattan Project to support the U.S. nuclear weapons program.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Unit 4 reactor building
Target entity description: The Unit 4 reactor building at the Fukushima Daiichi Nuclear Power Plant is a heavily damaged structure that became emblematic of the 2011 nuclear disaster following severe hydrogen explosions and subsequent radioactive releases.

• A. Unit 3 reactor building
  The Unit 3 reactor building at the Fukushima Daiichi Nuclear Power Plant is one of the severely damaged reactor structures from the 2011 disaster, known for suffering a catastrophic explosion and major radioactive release.
• B. Reactor No. 4
  Reactor No. 4 was the RBMK nuclear reactor at the Chernobyl Nuclear Power Plant whose catastrophic explosion in 1986 caused one of the worst nuclear disasters in history.
• C. K Reactor
  K Reactor is a decommissioned nuclear production reactor at the Savannah River Site in South Carolina that was used primarily for producing weapons-grade materials during the Cold War.
• D. NRU reactor
  The NRU reactor was a Canadian research nuclear reactor at Chalk River Laboratories known for producing medical isotopes and supporting materials testing and reactor physics research.
• E. D Reactor
  D Reactor was one of the early plutonium production reactors at the Hanford Site in Washington, built during the Manhattan Project to support the U.S. nuclear weapons program.
• F. None of above. chosen