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 can human facial expressions communicate? Answer: emotions

SOLUTION: Human facial expressions can communicate emotions.

PROBLEM: Question: The structure of mitochondrion plays an important role in what? Answer: aerobic respiration

SOLUTION: The structure of mitochondrion plays an important role in aerobic respiration.

PROBLEM: Question: What are polymers composed of many sugar building blocks called? Answer: polysaccharides

SOLUTION:
Polysaccharides are polymers composed of many sugar building blocks called.