Complex sentence: "The Sign of Four" In "The Adventure of the Missing Three-Quarter" Watson says that although he has "weaned" Holmes from drugs, he remains an addict whose habit is "not dead, but merely sleeping".
Split into simpler sentences: The Sign of Four In "The Adventure of the Missing Three-Quarter", Watson claims to have "weaned"Holmes off drugs. Even so, Holmes remains an addict whose habit is "not dead, but merely sleeping".