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 pin in a tree .

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

PROBLEM: The effect of speaking for a candidate is having your past altered .

SOLUTION: The goal of pulling for a haircut is having your hair altered .

PROBLEM: Having a photo requires photo long enough to express .

SOLUTION:
Having a position requires staff long enough to accumulate .