With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Titanic's remains was first stumbled upon over 70 years after it sank.
text_B: The Berkeley printing system is one of several standard architectures for printing on the Unix platform .. Unix. Unix. It originated in 2.10 BSD , and is used in BSD derivatives such as FreeBSD , NetBSD , OpenBSD , and DragonFly BSD .. BSD. BSD. FreeBSD. FreeBSD. NetBSD. NetBSD. OpenBSD. OpenBSD. DragonFly BSD. DragonFly BSD. A system running this print architecture could traditionally be identified by the use of the user command lpr as the primary interface to the print system , as opposed to the System V printing system lp command .. System V printing system. System V printing system. Typical user commands available to the Berkeley print system are  :. lpr -- the user command to print. lpq -- shows the current print queue. lprm -- deletes a job from the print queue. The lpd program is the daemon with which those programs communicate .. These programs support the line printer daemon protocol , so that other machines on a network can submit jobs to a print queue on a machine running the Berkeley printing system , and so that the Berkeley printing system user commands can submit jobs to machines that support that protocol .. line printer daemon protocol. line printer daemon protocol
not_related.