TASK DEFINITION: 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.
PROBLEM: Question: What type of energy travels through matter in wave form? Answer: sound

SOLUTION: Sound energy travels through matter in wave form.

PROBLEM: Question: Adulthood is divided into how many stages? Answer: three

SOLUTION: Adulthood is divided into three stages.

PROBLEM: Question: What do muscles need to contract? Answer: stimulus

SOLUTION:
Muscles need stimulus to contract.