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 amount of product that may be produced by a reaction under specified conditions called? Answer: theoretical yield
[EX A]: The amount of product that may be produced by a reaction under specified conditions is called theoretical yield.

[EX Q]: Question: Similarity in biochemicals, like the glucose used by virtually all living things for energy, provides evidence of what? Answer: evolution
[EX A]: Similarity in biochemicals, like the glucose used by virtually all living things for energy, provides evidence of evolution.

[EX Q]: Question: What basic structure holds plants upright, bears leaves and other structures, and transports fluids between roots and leaves? Answer: stem
[EX A]:
Stem basic structure holds plants upright, bears leaves and other structures, and transports fluids between roots and leaves.