Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: All cells have the small size in common.

Output: What do all cells have in common?


Input: Consider Input: Constant random motion trait of particles causes even cold objects to have some thermal energy.

Output: Which trait of particles causes even cold objects to have some thermal energy?


Input: Consider Input: Calcium nitrate is composed of a calcium cation and a nitrate anion.


Output: What is composed of a calcium cation and a nitrate anion?