Definition: 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.
Input: Sentence1: Helen wanted to go to space. Sentence2: She decided to become an astronaut. Sentence3: She studied very hard. Sentence4: She  passed all the tests!

Helen looked forward to her first mission.