Given a scientific passage and an answer, generate a question for the given answer.

Ex Input:
Passage: Figure 29.17 The tails of the Hale-Bopp comet point away from the Sun, evidence that light has momentum. Dust emanating from the body of the comet forms this tail. Particles of dust are pushed away from the Sun by light reflecting from them. The blue ionized gas tail is also produced by photons interacting with atoms in the comet material. (credit: Geoff Chester, U. Navy, via Wikimedia Commons). Answer: momentum

Ex Output:
The tails of the hale-bopp comet point away from the sun, evidence that light has what property of motion?

Ex Input:
Passage: Types of neurons include sensory neurons, motor neurons, and interneurons. Answer: interneurons

Ex Output:
Types of neurons include sensory neurons, motor neurons, and?

Ex Input:
Passage: Less dramatic types of mass wasting move Earth materials slowly down a hillside. Slump is the sudden movement of large blocks of rock and soil down a slope. ( Figure below ). All the material moves together in big chunks. Slumps may happen when a layer of slippery, wet clay is underneath the rock and soil on a hillside. Or they may occur when a river (or road) undercuts a slope. Slump leaves behind crescent-shaped scars on the hillside. Answer: slump

Ex Output:
What is the term for the sudden movement of large blocks of rock and soil down a slope?