narrative: Saturday was Kelly's birthday. She assumed no one cared about her birthday. She came home however and found all her friends waiting for her. They all yelled surprise. Kelly laughed and couldn't believe they remembered.
question: Why did Kelly laugh ?
original_sentence_for_question: Kelly laughed and couldn't believe they remembered.
answer: Kelly was so happy that her friends knew it was her birthday.
original_narrative_form: Saturday was Kelly's birthday. She assumed no one cared about her birthday. She came home however and found all her friends waiting for her. They all yelled surprise. Kelly laughed and couldn't believe they remembered.
question_meta: rocstories_narrative_13055_sentence_4_question_1