In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.

Q: mercury is similar in appearance to the moon : it is heavily cratered with regions of smooth plains , has no natural satellites and no substantial atmosphere.

A: mercury , which looks like the moon with its many craters and areas of smoothness , has no orbiting bodies around it and a minimal atmosphere.
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Q: the organic matter in soil derives from plants and animals.

A: the organic stuff in dirt comes from plants and animals.
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Q: bone marrow is the flexible tissue found in the hollow interior of bones.

A:
bone marrow is the flexible tissue found inside bones.
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