In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.
Q: Sentence1: George decided to surprise his father as a birthday present. Sentence2: He bought two tickets to his father's favorite football team. Sentence3: On the day, George blindfolded his father and drove for a long time. Sentence4: George's father had no idea where they were going.
A:
When they reached the stadium, George's father was so excited!