With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Shield had 7 seasons, from 2002 to 2008.
text_B: Service of All the Dead is a crime novel by Colin Dexter , the fourth novel in Inspector Morse series .. Colin Dexter. Colin Dexter. Inspector Morse. Inspector Morse. crime novel. Crime fiction. crime. Crime fiction. novel. novel
not_related.