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]: Most pets sleep in a buggy .
[A]: Most children sleep in a bed.


[Q]: A snowball is used to defend oneself against an alert .
[A]: A chain is used to store oneself against an attack .


[Q]: The teacher taught the students a new lesson.
[A]:
The coordinator taught the students a new act .