In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of the story.
Q: Title: Coal Mine. Sentence 1: Timothy took a shower. Sentence 2: He wiped off all the coal dust from his body. Sentence 3: Timothy decided never to go into the mines again. Sentence 4: He combed his hair and looked at himself in the mirror.
A:
He then saw the dirt that was still under his nails.