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: When light meets matter, it may be reflected, transmitted, or what? Answer: absorbed
[EX A]: When light meets matter, it may be reflected, transmitted, or absorbed.

[EX Q]: Question: What is the key to the demographic transition? Answer: reduced family size
[EX A]: Reduced family size is the key to the demographic transition.

[EX Q]: Question: Is the yolk more or less concentrated toward the animal pole? Answer: less concentrated
[EX A]:
Is the yolk more or less concentrated toward the animal pole?