TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Seismic waves prove the inner core it is solid.

SOLUTION: What do seismic waves prove about the inner core?

PROBLEM: Blood is made up of red blood cells, white blood cells, platelets, and plasma.

SOLUTION: Blood is made up of red blood cells, white blood cells, platelets, and what else?

PROBLEM: After fertilization, a zygote forms into two cells.

SOLUTION:
After fertilization, how many cells does a zygote form into?