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

Input: Consider Input: Some meteorites are made of iron and nickel and are thought to be very similar to the core of the earth.

Output: Some meteorites are made of iron and nickel and are thought to be very similar to what part of the earth?


Input: Consider Input: Stirring, surface area, and temperature affect the rate at solute dissolves what occurs.

Output: Stirring, surface area, and temperature affect the rate at which what occurs?


Input: Consider Input: Bases are the ionic compounds that produce negative hydroxide ions when dissolved in water.
Output: What are the ionic compounds that produce negative hydroxide ions when dissolved in water?