Complex sentence: After being ill with a cold for some time, Lockwood decides that he has had enough of the moors and travels to Wuthering Heights to inform Heathcliff that he is returning to the south.
Split into simpler sentences: After being ill with a cold for some time, Lockwood decides that he has had enough of the moors. He travels to Wuthering Heights to inform Heathcliff that he is returning to the south.