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

Input: Consider Input: Water seeping into the ground is known as infiltration.

Output: Water seeping into the ground is known as?


Input: Consider Input: Compounds with metals and nonmetals sharing electrons are known as ions kinds of compounds.

Output: Compounds with metals and nonmetals sharing electrons are known as what kinds of compounds?


Input: Consider Input: Lying with their mouths open, a behavior called gaping, probably serves the function of cooling down for crocodiles.
Output: Lying with their mouths open, a behavior called gaping, probably serves what function for crocodiles?