Given the task definition and input, reply with output. 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: George noticed that his grass was looking very poor. Sentence2: He decided to make a change and work on his lawn. Sentence3: He purchased grass seed and weed killer and put them down. Sentence4: He watered and mowed his lawn on a regular basis.
George noticed after about a month that his lawn looked fantastic.