Kuiper Belt objects

Target entity: Kuiper Belt objects
Context triple: [SOFIA airborne observatory operations, observes, Kuiper Belt objects]

• A. Solar System
  The Solar System is the gravitationally bound system of the Sun and the celestial bodies that orbit it, including Earth and other planets, moons, asteroids, and comets.
• B. Pleiades
  The Pleiades are a famous open star cluster in the constellation Taurus, often known as the Seven Sisters in Greek mythology.
• C. Iapetus
  Iapetus is a Titan from Greek mythology, often associated with mortality and craftsmanship and known as the father of Prometheus, Epimetheus, Atlas, and Menoetius.
• D. Division on Dynamical Astronomy
  The Division on Dynamical Astronomy is a specialized branch of the American Astronomical Society focused on the study of the motions and gravitational interactions of astronomical objects.
• E. The Lives of the Planets
  "The Lives of the Planets" is an episode of Carl Sagan’s landmark science documentary series *Cosmos: A Personal Voyage* that explores the origins, evolution, and diverse characteristics of the planets in our solar system.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Kuiper Belt objects
Target entity description: Kuiper Belt objects are icy celestial bodies orbiting the Sun beyond Neptune, thought to be remnants from the early solar system and the source of many short-period comets.

• A. Solar System
  The Solar System is the gravitationally bound system of the Sun and the celestial bodies that orbit it, including Earth and other planets, moons, asteroids, and comets.
• B. Pleiades
  The Pleiades are a famous open star cluster in the constellation Taurus, often known as the Seven Sisters in Greek mythology.
• C. Iapetus
  Iapetus is a Titan from Greek mythology, often associated with mortality and craftsmanship and known as the father of Prometheus, Epimetheus, Atlas, and Menoetius.
• D. Division on Dynamical Astronomy
  The Division on Dynamical Astronomy is a specialized branch of the American Astronomical Society focused on the study of the motions and gravitational interactions of astronomical objects.
• E. The Lives of the Planets
  "The Lives of the Planets" is an episode of Carl Sagan’s landmark science documentary series *Cosmos: A Personal Voyage* that explores the origins, evolution, and diverse characteristics of the planets in our solar system.
• F. None of above. chosen