Columbia disaster

Target entity: Columbia disaster
Context triple: [NASA Space Shuttle program, notableAccident, Columbia disaster]

• A. Space Shuttle Challenger disaster
  The Space Shuttle Challenger disaster was the 1986 launch failure in which NASA’s Space Shuttle Challenger broke apart shortly after liftoff, killing all seven crew members and prompting major reforms in the U.S. space program.
• B. Space Shuttle Columbia Memorial
  The Space Shuttle Columbia Memorial is a monument honoring the astronauts who lost their lives in the 2003 Columbia disaster, located among other national memorials to fallen heroes.
• C. Rogers Commission investigation of the Space Shuttle Challenger disaster
  The Rogers Commission investigation of the Space Shuttle Challenger disaster was a presidentially appointed inquiry that probed the technical and organizational causes of the 1986 shuttle explosion, famously exposing flaws in NASA’s decision-making and safety culture.
• D. Apollo 11
  Apollo 11 was the historic 1969 spaceflight that first landed humans on the Moon and safely returned them to Earth.
• E. Space Shuttle Discovery
  Space Shuttle Discovery is a retired NASA orbiter best known for launching the Hubble Space Telescope and conducting numerous key missions in the Space Shuttle program.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Columbia disaster
Target entity description: The Columbia disaster was the 2003 Space Shuttle tragedy in which the orbiter Columbia broke apart during reentry, killing all seven astronauts aboard and leading to major changes in NASA’s human spaceflight program.

• A. Space Shuttle Challenger disaster
  The Space Shuttle Challenger disaster was the 1986 launch failure in which NASA’s Space Shuttle Challenger broke apart shortly after liftoff, killing all seven crew members and prompting major reforms in the U.S. space program.
• B. Space Shuttle Columbia Memorial
  The Space Shuttle Columbia Memorial is a monument honoring the astronauts who lost their lives in the 2003 Columbia disaster, located among other national memorials to fallen heroes.
• C. Rogers Commission investigation of the Space Shuttle Challenger disaster
  The Rogers Commission investigation of the Space Shuttle Challenger disaster was a presidentially appointed inquiry that probed the technical and organizational causes of the 1986 shuttle explosion, famously exposing flaws in NASA’s decision-making and safety culture.
• D. Apollo 11
  Apollo 11 was the historic 1969 spaceflight that first landed humans on the Moon and safely returned them to Earth.
• E. Space Shuttle Discovery
  Space Shuttle Discovery is a retired NASA orbiter best known for launching the Hubble Space Telescope and conducting numerous key missions in the Space Shuttle program.
• F. None of above. chosen