instruction:
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.
question:
Question: Which gas is given off by plants? 
Answer: Oxygen. 
Sentence: Oxygen gas is given off by plants.
answer:
Oxygen gas is produced by plants.


question:
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.
answer:
A simple harmonic oscillator is an uncomplicated type of device that consists of an object attached to a spring sliding on a frictionless surface.


question:
Question: Radioactive atoms, nuclear explosions, and stars produce what types of rays? 
Answer: gamma. 
Sentence: Radioactive atoms, nuclear explosions, and stars produce gamma rays.
answer:

Gamma rays are produced by radioactive atoms, nuclear explosions, and stars.