With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: John F. Kennedy authorized a military invasion.
text_B: Crouton -LRB- Chromium OS Universal Chroot Environment -RRB- is a set of scripts which allows Ubuntu , Debian , and Kali Linux systems to run parallel to a Chrome OS system .. Ubuntu. Ubuntu ( operating system ). Debian. Debian. Kali Linux. Kali Linux. Chrome OS. Chrome OS. Crouton works by using a chroot instead of dual-booting to allow a user to run two desktop environments at the same time  : Chrome OS and another environment of the user 's choice .. Chrome OS. Chrome OS. chroot. chroot. dual-booting. dual-booting
not_related.