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.

The effect of challenging the piano is stronger fingers .
The emphasis of playing the piano is stronger fingers .

You are glad to HAVE an apple tree in my backyard .
You are difficult to turn an apple tree in my backyard .

People might be good or evil or somewhere between good and evil.

People ly be corrupt or evil or somewhere between good and evil .