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.

Sentence1: Mary saved her pennies in a big glass jug. Sentence2: She planned to cash in the pennies when the jug was full. Sentence3: One day, the jug could hold no more pennies. Sentence4: Mary was excited to spend her savings.
As she went to lift the jug, she realized it was far too heavy.