Task: Text Completion
Input (English): Sentence1: Lily was looking forward to her birthday - she always had a big party. Sentence2: But her best friend wasn't mentioning any plans. Sentence3: On her birthday, she still hadn't heard anything about a celebration. Sentence4: Lily was very disappointed when she walked into her dark living room.
Output (English): Her mood changed quickly when her friends jumped out to surprise her.