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: Under which conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature? Answer: A crushed sugar cube is added and the water is stirred.
[EX A]: Under a crushed sugar cube is added and the water is stirred conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature.

[EX Q]: Question: What kind of mammalian reproduction is risky for the offspring but not the mother? Answer: monotreme
[EX A]: Monotreme kind of mammalian reproduction is risky for the offspring but not the mother.

[EX Q]: Question: All solutions contain at least how many substances? Answer: two
[EX A]:
All solutions contain at least two substances.