What is the fine-grained topic of the following text: First it was Cliffhanger, and now MGM and Warner Bros. announced they are teaming with Roland Emmerich and Dean Devlin to create a re-imagined trilogy based on the sci-fi hit Stargate, one of the biggest titles in the MGM library. Only return the topic.
Creation of a re-imagined Stargate trilogy by MGM and Warner Bros.