 Not only did this result in the company (in a way) re-entering the basic cable television industry (in regards to nationally available channels), but Warner Bros. also regained the rights to their pre-1950 film library, which by then had been owned by Turner (the films are still technically held by Turner, but WB is responsible for sales and distribution), while Turner gained access to WB's post-1950 library, as well as other WB-owned properties.The Turner deal also brought two separate film companies, New Line Cinema and Castle Rock Entertainment, into the Time Warner fold.Time Warner completed its purchase of Six Flags Theme Parks in 1993 after buying half of the company in 1991, saving it from financial trouble.