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

Input: Consider Input: The mesopause is at the top of the mesosphere.

Output: What is at the top of the mesosphere?


Input: Consider Input: The amniotic egg first evolved in reptiles.

Output: The amniotic egg first evolved in what species?


Input: Consider Input: Highly viscous kind of viscosity is found in long-chain hydrocarbons.
Output: What kind of viscosity is found in long-chain hydrocarbons?