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: What are intervertebral discs made of? Answer: fibrocartilage

A: Intervertebral discs are made of fibrocartilage.
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Q: Question: What forms a ketone when oxidized? Answer: secondary alcohol

A: Secondary alcohol forms a ketone when oxidized.
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Q: Question: The sun and many other light sources produce waves that are randomly this? Answer: polarized

A:
The sun and many other light sources produce waves that are randomly this?
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