context: Kripke had previously offered the project to Fox producer Peter Johnson, and when Johnson joined Wonderland Sound and Vision as a television director, he contacted Kripke [17]. Johnson soon became the co-executive producer of the television series, as did Wonderland owner McGee, executive producer, and the company took on the production of the pilot episode. Nevertheless, before you could start shooting, you had to work a lot on the script. Initially, according to the scenario, the brothers were not raised by their father, but by their aunts and uncles. Therefore, when Dean first comes to Sam for help in the first episode, he first had to convince him that the supernatural exists. However, Kripke decided that this made the backstory too confusing and reworked it with Peter Johnson in such a way that the brothers were raised by their father to become hunters [18]. The script went through many revisions and additions. According to one idea, Sam Jessica's girl turned out to be a demon, and this was what prompted him to go on a journey with Dean; Kripke thought that the death of Jessica would be a more suitable motivation, and she was killed in the same way as Sam’s mother, which gave the show the correct setting [19]. On other rejected ideas, Sam decides that Dean is the serial killer who killed their father [20] or their father dies in Jessica’s house [21]. The filming of the pilot episode was given a green light after director David Nutter, who had previously worked with Kripke on "Tarzan," gave his consent to shoot it [22] [23]. When the television channel ordered the series, the studio appointed Robert Singer as executive producer, as she wanted Kripke to work with someone who has experience in producing. Thanks to his experience working on The X-Files, co-executive producer John Shiban was hired to work on the mythology of the television series [24]. Kripke planned that the show would last three seasons, but later he decided to increase the number of seasons to five [25] and hoped that the series would end on a high note [26]. However, due to the high ratings and requests of fans of the series, thirteen seasons have already been shot. And the studio management does not intend to stop there.
question: How many seasons of the series "Supernatural" created to date?
answers.text: thirteen