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: You are likely to find a cat in a pound.

SOLUTION: You are likely to find a pear in a pound .

PROBLEM: You are sad to find an ear in a Police rat 's bedroom .

SOLUTION: You are likely to find an ear in a serial killer's bedroom.

PROBLEM: You are likely to find a keyboard in a landfill .

SOLUTION:
You are likely to find a tree in a forest.