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: I went to the dog park with my black lab. Sentence2: My dog ate a lot before we left the house. Sentence3: Halfway to the park, my dog had to poop. Sentence4: I forgot to bring a plastic bag to pick up the poop.

I just left it there, and continued to the dog park.