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 is the predicted year that as many as half of all remaining species could go extinct? Answer: 2050
[EX A]: 2050 is the predicted year that as many as half of all remaining species could go extinct.

[EX Q]: Question: Which tool would best help a person observe the parts of a plant cell? Answer: microscope
[EX A]: A microscope would best help a person observe the parts of a plant cell.

[EX Q]: Question: What external feature in human beings is responsible for balance? Answer: ears
[EX A]:
The ears are an external feature in human beings is responsible for balance.