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: Which single most factor is responsible for the extinction of hundreds of species of birds? Answer: human actions
[EX A]: Human actions is responsible for the extinction of hundreds of species of birds.

[EX Q]: Question: The body contains how many types of muscle tissue? Answer: three
[EX A]: The body contains three types of muscle tissue.

[EX Q]: Question: Naphthalens is a chemical which is commonly used in what? Answer: mothballs
[EX A]:
Naphthalens is a chemical which is commonly used in mothballs.