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: Trees release what gas as a byproduct of photosynthesis, thereby facilitating human respiration? Answer: oxygen

SOLUTION: Trees release oxygen gas as a byproduct of photosynthesis, thereby facilitating human respiration.

PROBLEM: Question: What do you call a substance that cannot be broken down to other substances by chemical reactions.? Answer: an element

SOLUTION: You call a substance that cannot be broken down to other substances by chemical reactions an element.

PROBLEM: Question: What happens to metal railroad tracks during the heat of a summer day? Answer: increase in length

SOLUTION:
A(n) increase in length happens to metal railroad tracks during the heat of a summer day.