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 astronomical phenomenon is often comprised of remnants of the earliest material that formed in the solar system? Answer: meteorites

A: Meteorites are often comprised of remnants of the earliest material that formed in the solar system.
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Q: Question: Plant cells have structures that animal cells? Answer: lack

A: Plant cells have structures that animal cells lack.
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Q: Question: How many quarks are in each proton and neutron? Answer: three

A:
There are three quarks in each proton and neutron.
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