premise: Sam wrote a letter to his mother.
initial: He dropped off the letter in the mailbox.
counterfactual: He gave it to her in the living room.
original_ending: He was surprised to find that his mother did not receive his letter. She waited for a month for it to arrive. Sam tried to send his letter again.
edited_ending: He was surprised to find that his mother did not read his letter.She waited for a month without reading it.Sam tried to give his letter again.<SEP>He was happy to find that his mother did receive his letter.She did not wait for it to arrive.Sam did not try to send his letter again.<SEP>He was surprised to find that his mother did not read his letter.She waited for a rainy day to read it.Sam tried to give her more letters from now on.