TASK DEFINITION: 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.
PROBLEM: A child can smell a flower.

SOLUTION: A child can smell a blood .

PROBLEM: You are likely to bump trees in a forest .

SOLUTION: You are likely to steal trees in a forest .

PROBLEM: I put a stamp on the envelope.

SOLUTION:
I initiated a public on the company .