With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Huntington's disease can be caused by a mutation.
text_B: Illusions is a surreal ColecoVision video game in which the player maneuvers blobs around the screen , trying to get them to merge , or , alternatively , split apart .. ColecoVision. ColecoVision. video game. video game. At times , lizards may chase the blobs around .. The water bucket , when spilled , can cause the lizard to turn into a fish .. If the fish remains there too long , however , it turns into a bird .. The game was created by Nice Ideas , a division of Mattel that was located midway between Cannes and Nice .. Nice Ideas. Nice Ideas
not_related.