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.
Q: Sentence1: Mark was convinced there was a ghost in his house. Sentence2: His mom assured him that ghosts weren't real. Sentence3: Mark wasn't convinced so he decided to set a trap. Sentence4: He heard what he thought was a ghost and tossed a net over it!
A:
Underneath the net was his dad and they both had a laugh about it.