You are given a question, its answer, and a sentence that supports the question, i.e., the answer to the question is inferable from the sentence. In this task, you need to paraphrase the given sentence so that the paraphrased sentence still supports the question i.e. you can still infer the answer to the question from the paraphrased sentence. Do not write a paraphrase with a minor change in the given sentence e.g. replacing the word "one" with "a". Instead, try to write a paraphrase that contains new words, i.e. the words that are not present in the input sentence.

[EX Q]: Question: An object attached to a spring sliding on a frictionless surface is an uncomplicated type of what device? 
Answer: simple harmonic oscillator. 
Sentence: An object attached to a spring sliding on a frictionless surface is an uncomplicated type of simple harmonic oscillator.
[EX A]: A simple harmonic oscillator is an uncomplicated type of device that consists of an object attached to a spring sliding on a frictionless surface.

[EX Q]: Question: All of the populations that live in the same area make up what type of group, which includes populations of different organisms? 
Answer: community. 
Sentence: All of the populations that live in the same area make up a(n) community, which includes populations of different organisms.
[EX A]: A community consists of all organisms and their populations in a given area.

[EX Q]: Question: Where is energy stored in a chemical substance? 
Answer: between atoms. 
Sentence: Energy is stored in a chemical substance between atoms.
[EX A]:
A chemical substance between atoms is where the energy is stored.