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: Tim and his dad went to the park to fly his new kite. Sentence2: Tim tried, but was unable to get the kite off the ground. Sentence3: His dad showed him how to run to get the kite in the air, Sentence4: Tim tried again using his dad's advice.

His dad was very proud of him when the kite took to the air.