With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Republic of Ireland and the United Kingdom worked toward a resolution to the period of armed conflict known as The Troubles during the 1980s and 1990s.
text_B: is a role-playing video game developed and published by Spike Chunsoft , with assistance from tri-Ace , for the PlayStation Vita and PlayStation 4 video game consoles .. Spike Chunsoft. Spike Chunsoft. tri-Ace. tri-Ace. PlayStation 4. PlayStation 4. PlayStation Vita. PlayStation Vita. role-playing video game. role-playing video game. video game consoles. video game consoles. It was released in Japan in December 2015 , and worldwide in October 2016 .
not_related.