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.

[Q]: Question: When different types of tissues work together to perform a unique function, what do they form? Answer: organ
[A]: When different types of tissues work together to perform a unique function, they form organ.


[Q]: Question: Ionic compounds contain cations and anions rather than what? Answer: discrete neutral molecules
[A]: Ionic compounds contain cations and anions rather than discrete neutral molecules.


[Q]: Question: The cubic crystal system is composed of how many different types of unit cells? Answer: three
[A]:
The cubic crystal system is composed of three many different types of unit cells.