With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Betty Buckley played math teacher Ms. Collins.
text_B: Ratchet  : Deadlocked -LRB- known as Ratchet  : Gladiator in Europe and Australia ; and known as Ratchet & Clank 4 in Japan -RRB- is a 2005 platformer video game developed by Insomniac Games and published by Sony Computer Entertainment for the PlayStation 2 .. Insomniac Games. Insomniac Games. Sony Computer Entertainment. Sony Computer Entertainment. Ratchet & Clank. Ratchet & Clank. PlayStation 2. PlayStation 2. platformer. platform game. video game. video game. Ratchet. Ratchet ( Ratchet & Clank ). Clank. Clank ( Ratchet & Clank ). The game 's story begins as Ratchet , Clank , and Al are abducted and forced to compete in `` DreadZone '' , a violent game show in which heroes are forced to kill each other .. Ratchet. Ratchet ( Ratchet & Clank ). Clank. Clank ( Ratchet & Clank ). List of Ratchet & Clank characters#Big Al. Ratchet is given a `` DeadLock '' collar , which will explode if he becomes uncooperative or boring .. Ratchet. Ratchet ( Ratchet & Clank ). The three must find a way to deactivate the collars and free the other heroes being held prisoner .. Deadlocked was the last Ratchet & Clank game to be rated T.. Ratchet & Clank. Ratchet & Clank. Ratchet. Ratchet ( Ratchet & Clank ). Clank. Clank ( Ratchet & Clank ). The gameplay is similar to that of other games in the series , but focuses more on shooter aspects rather than platforming .. The player , as Ratchet , fights in DreadZone tournaments across the `` Shadow Sector '' in the `` Solana '' Galaxy , with a large variety of weapons .. Ratchet. Ratchet ( Ratchet & Clank ). This game was the first in the series to feature cooperative gameplay in a story mode , and also includes an online multiplayer mode .. Some vehicles return from previous games , and new ones are introduced .. For the first time , Clank -LRB- in his typical form -RRB- was not a playable character .. Clank. Clank ( Ratchet & Clank ). Deadlocked was met with generally favorable reviews , although slightly lower than its predecessors , with some criticism being aimed at its darker tone , repetitive gameplay and level design , and the removal of Clank as a playable character .. Clank. Clank ( Ratchet & Clank )
not_related.