With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Narrows is only a book.
text_B: The Narrows is an American 2008 independent film starring Kevin Zegers , Sophia Bush , Vincent D'Onofrio , Eddie Cahill and Monica Keena .. Kevin Zegers. Kevin Zegers. Sophia Bush. Sophia Bush. Eddie Cahill. Eddie Cahill. Monica Keena. Monica Keena. Vincent D'Onofrio. Vincent D'Onofrio
related.