With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Harry Potter is based on novels by C. S. Lewis.
text_B: The Steam Man of the Prairies by Edward S. Ellis was the first U.S. science fiction dime novel and archetype of the Frank Reade series .. Edward S. Ellis. Edward S. Ellis. science fiction. science fiction. dime novel. dime novel. Frank Reade. Frank Reade. It is one of the earliest examples of the so-called `` Edisonade '' genre .. Edisonade. Edisonade. Ellis was a prolific 19th century author best known as a historian and biographer and a source of early heroic frontier tales in the style of James Fenimore Cooper .. James Fenimore Cooper. James Fenimore Cooper. This novel may be inspired by the steam powered invention of Zadoc Dederick .. Zadoc Dederick. Zadoc Dederick. The original novel was reissued six times from 1868 to 1904 .. 1868 in literature. A copy of the first 1868 printing with its cover intact is owned by the Rosenbach Museum and Library , Philadelphia. 1868 in literature. Philadelphia. Philadelphia
not_related.