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: Elena walked towards Joshua. Sentence2: Joshua tried to straighten his posture so he would look serious. Sentence3: She gave him a hug and tried to ask how he's doing. Sentence4: He maintained a positive attitude and commented on her looks.

She thanked him and walked away.