Task: Text Categorization
Input (English): Text:  The Dark Heart of Time: a Tarzan novel is a 1999 work by Philip José Farmer authorized by Edgar Rice Burroughs Inc. The book was first announced under the title Tarzan's Greatest Secret in 1997.Set in October 1918—during Tarzan's search for Jane—the novel takes place between Tarzan the Untamed and Tarzan the Terrible.The novel's antagonist is James D. Stonecraft an American oil magnate who believes that Tarzan knows the secret of immortality.
Output (English): No