Given a scientific passage and an answer, generate a question for the given answer.

Ex Input:
Passage: Sperm are produced in the testes in the process of spermatogenesis. Answer: spermatogensis

Ex Output:
What process creates sperm?

Ex Input:
Passage: When a fluorine atom gains an electron, it becomes a negative fluoride ion. Answer: fluoride ion

Ex Output:
When a fluorine atom gains an electron, it becomes a negative what?

Ex Input:
Passage: A human sperm is a tiny cell with a tail. A human egg is much larger. Both cells are mature haploid gametes that are capable of fertilization. What process is shown in this photograph? Notice the sperm with the head piece containing the genetic material, a flagella tail that propels the sperm, and a midpiece of mostly mitochondria, supplying ATP. Answer: the "head"

Ex Output:
What part of the sperm contains the genetic material?