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.

Input: Consider Input: Question: Why do birds need a light-weight body? Answer: to stay aloft

Output: Birds need a light-weight body for to stay aloft.


Input: Consider Input: Question: What are unique in having adaptive immunity in addition to innate immunity? Answer: vertebrates

Output: Vertebrates are unique in having adaptive immunity in addition to innate immunity.


Input: Consider Input: Question: What is the most common type of brain injury? Answer: concussion


Output: A(n) concussion is the most common type of brain injury.