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: Samantha needed to get new car tires. Sentence2: Her winter tires were all worn out. Sentence3: She searched online for specials. Sentence4: She was able to purchase a pair of tires for $200 off retail price.

Her mechanic installed them on her car when the tires arrived.