Given a sentence, generate a new sentence by performing small changes on the sentence. Here, make sure that the changes are semantically related and syntactically similar to the input. And the generated sentence should have high commonsense plausibility, that is to have reasonable probability of it being true.

Q: A heart is for pumping blood through the chamber .

A: A A is for ensuring blood through the water .
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Q: A c may have a larg or narrow casing .

A: A T may have a wide or delicate casing .
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Q: You can use a theme to target practice .

A:
You can use a pistol to target practice.
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