You will be given a definition of a task first, then some input of the task.
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.

A piece is a symbol that represents a musical era .
Output:
A note is a symbol that represents a musical tone.