TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Water plus other substances makes a(n) solution.

SOLUTION: Water plus other substances makes what?

PROBLEM: Springs or geysers do we call heated groundwater that erupts from the ground under pressure.

SOLUTION: What do we call heated groundwater that erupts from the ground under pressure?

PROBLEM: After implantation, the blastocyst is called an embryo.

SOLUTION:
What is the blastocyst called after implantation?