Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Could have been good

Funny how Eric Seward who wrote the classic cyberman tale "Earthshock" returns to Who with this clunker.Tried to give this episode a chance in 1986, but I still remember two things that ruined this episode.Previously, the Cybermen were virtually indestructible, especially in the earlier stories they could stop a tank. In this episode a Cyberman is dispatched with a 9mm pistol shot to the head. Granted, you could say "lucky shot," but alas there is nothing in the head unit of Cyberman; their brain is in their chest unit.Fat Cybercontroller, nuff said there.Stories like this doomed Colin Baker's Dr. Who and almost ended the series for good.