In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[EX Q]: Question: What season causes people to look forward to spring? Answer: winter
[EX A]: Winter season causes people to look forward to spring.

[EX Q]: Question: The amniotic egg first evolved in what species? Answer: reptiles
[EX A]: The amniotic egg first evolved in reptiles.

[EX Q]: Question: What part of the sperm contains the nucleus? Answer: head
[EX A]:
The head of the sperm contains the nucleus.