With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Harry Potter is one book.
text_B: Here Comes the Nelsons is a 1952 American comedy film starring real-life husband and wife Ozzie and Harriet Nelson and their sons David and Ricky Nelson .. Harriet Nelson. Harriet Nelson. Ricky Nelson. Ricky Nelson. comedy film. comedy film. Ozzie. Ozzie Nelson. David. David Nelson ( actor ). The supporting cast includes Rock Hudson , Sheldon Leonard , Jim Backus , Gale Gordon , and Chubby Johnson .. Rock Hudson. Rock Hudson. Sheldon Leonard. Sheldon Leonard. Jim Backus. Jim Backus. Gale Gordon. Gale Gordon. Chubby Johnson. Chubby Johnson. The film was directed by Frederick de Cordova .. Frederick de Cordova. Frederick de Cordova. Here Come the Nelsons doubled as the pilot for the television series The Adventures of Ozzie and Harriet .. Ozzie. Ozzie Nelson. pilot. Pilot ( television episode ). The Adventures of Ozzie and Harriet. The Adventures of Ozzie and Harriet
not_related.